Krsna personally never leaves Goloka Vrindavana as His original two armed form. He is simply enjoying loving reciprocal relations with the Brijwasis devotees.

Krsna personally never leaves Goloka Vrindavana as that original two armed form, so He has nothing to do with the material existence. 

Krsna is Rasabihari, He is simply enjoying loving relations with the Brijwasis associates in Goloka Vrindavana.

Krsna the Supreme Personality of Godhead and cause of all causes, first expands as His older brother Balarama.

Balarama then eventually expands as Visnu (Narayana) who lives on all the Vaikuntha Planets, with each having their own unique name that describes their particular pastime.

However, these Visnu-tattva forms of God on all the Vaikuntha Planets, also have nothing to do with the material existence, Lord Visnu is simply enjoying with the goddess of fortune and all of His other servants. 

As explained, Krsna first expands as His older brother Balarama who facilitates all the beautiful loving reciprocal relationships on the Vaikuntha Planets.

Balarama technically expands Himself first as the quadruple expansions of -

Vasudeva, 

Anniruddha, 

Pradyumna,

Shankarshan. 

Shankarshan and Vasudeva expand themselves as Narayana (Visnu) and Ananta Sesha.

Then Shankarshan expands Himself as Maha Visnu who creates the material creation. 

Maha Visnu is the original source of all material existence that originates from Him. 

Karanadakasayi Visnu is also another name for Maha Vishnu who lays down in the causal ocean within 1/4 of the Spiritual Sky and creates the temporary material energy. 

And where does the causal ocean come from?

It is an ocean created by Maha Visnu's own perspiration. 

While laying in the causal ocean, Maha Visnu exhales uncountable innumerable universes (Brahmandas) that emanate from His breathing and the pores of His Skin.

And all the Brahmanda universes float in the causal ocean.

Maha Visnu is the origin of everything in material creation, it is in His dreaming, while He sleeps, He creates all the material Worlds (Brahmanda universes). 

In all paintings Maha Visnu is seen sleeping and dreaming.

Srila Prabhupada – “This material creation is the spirit soul’s dream. Actually all existence in the material world is a dream of Maha-Visnu, as the Brahma-Samhita describes–

“This material world is created by the dreaming of Maha-Visnu. The real, factual platform is the spiritual world, but when the spirit soul wants to imitate the Supreme Personality of Godhead, he is put into this dreamland of material creation”. (Srimad Bhagavatam Canto 4 Chapter 29 Text 83)

Srila Prabhupada - “Everything happening within time, which consists of past, present and future, is merely a dream. This is the secret in understanding in all the Vedic literature.” (Srimad Bhagavatam Canto 4 Chapter 29 Text 2b)

Srila Prabhupada - "Factually all of material existence is only a dream. Thus there is no question of past, present or future. Persons who are addicted to karma-kanda-vicara, which means ‘working for future happiness through fruitive activities’, are also dreaming. Similarly, past happiness and present happiness are merely dreams" (Srimad Bhagavatam 4.29.2b)

The entire material creation are the dreams of the sleeping Maha Visnu.

As explained, deep inside each massive Brahmanda universe coming from Maha Visnu, is a secondary universe where Maha Visnu expands as Garbhodakashayi Visnu.

Maha Visnu personally expands Himself and enters deep into each of the massive Brahmanda universes into a tiny "secondary universe" within each Brahmanda greater universe

So we can understand how little and small we are in our single universe.

We think this single material universe we are in, deep inside our Brahmanda, is very big, but on the grand scale, our single universe is tiny, very small.

So Maha Visnu enters into each of these little universes and expands Himself as Garbhodakashayi VishLnu.

In other words, Maha Visnu, after creating each Brahmanda universe and their inner secondary tiny universe, then enters as Garbhodakashayi Visnu into each secondary tiny universes.

From Him, Lord Brahma then appears. 

Maha Visnu, through His eyes also glances at each secondary universe within each Brahmanda. 

And from His glance, He impregnates all of the jiva-tattva souls who have chosen to enter the material creation.

Technically, no jiva-souls originates from Maha Visnu, they simple take shelter of Him after choosing to leave the Spiritual Worlds so they can eventually be given access to the material creation via Maha Visnu.

Here here

They then take birth according to their independent rebellious desires that caused them to leave the Spiritual World in the first place to enter a particular material universe and material bodily vessel that matches and suites the desires they have. 

Also it should be clearly understood that the word Earth can also mean "Brahmanda universe" as well as its "secondary inner material universe" that is deep inside the Brahmanda.

Maha Vishnu is like the father who impregnates the mother, meaning Brahmandas that are also called Words or Earth with His glance, then the jiva souls are all born into the material creation from that interaction. 

Garbhodakashayi Vishnu is laying down deep within the secondary universe inside the surrounding Brahmanda.

From Garbhodakashayi Vishnu a Lotus flower sprouts from His naval and upon that lotus flower the original living created being of each material universe Lord Brahma is born. 

Lord Brahma is given the instruction to perform Tapasya and through Tapasya and devotion to the Lord (Maha Vishnu) he has given Darshan of the Supreme Lord and the Lord reveals from within his heart the Vedic knowledge. 

Brahma is therefore the first spiritual master of each universe.

The ultimate purpose of this material creation is to send all jiva souls back home back to Godhead from where they originated. 

Krishna from whom Maha Vishnu has originally expanded from, says at the beginning of the material creation, that I have given the Vedic knowledge through Brahma and then after the Vedas are revealed Brahma begins the process of creation of all the planetary Systems and all the various species of life. 

And of all the species of life, Krishna is to be known as the purpose of creation. 

There are four Yugas, and according to the particular persons desires and  karmic condition that are coming from a previous creation to a new material creation. 

Satya-Yuga is for the very pious where practically everyone goes back to Godhead because they have such an inclination towards spiritual life.

In Treta-Yuga people become slightly become more degraded.

And in Dwapara-Yuga half the population is God consciousness and half are degraded. 

And for those living entities (jiva souls) who have the worst possible Karma, they take birth in Kali-Yuga.

Kali-Yuga is an ocean of faults; it’s the age of Quarrel, the age of hypocrisy, the iron age of irreligion. The age where religion become irreligion and irreligion becomes religion.

However, it is explain in Srimad Bhagvatam that Kali-Yuga is most blessed and most worshipable of all because in the age of Kali the Supreme Lord incarnate in His most munificent and merciful of all incarnation to give everyone love of through the chanting of the holy names 

Hare Krishna Hare Krishna, Krishna, Krishna Hare Hare/Hare Rama Hare Rama, Rama, Rama Hare, Hare. 

Exactly how does this comes about? 

The Lord appears in this age of Kali Yuga as Lord Caitanya to deliver this pure gift of Krishna  indiscriminately to everyone not considering qualification or disqualification.

Above the decaying temporary material creation are the perpetual forever youthful Vaikuntha Planets where Vishnu resides.

Those Spiritual Vaikuntha Planets surround the central abode of Krishna the Supreme Personality of Godhead and cause of ALL causes, known as Goloka-Vrindavana where Krishna's pastimes with all His dear friends and family members are eternal.

The temporary decaying material creation we live in is created by Maha Vishnu, an expansion of Lord Krishna.

The material creation makes up a 1/4 of the Spiritual Sky (Brahmajyoti) as seen in bottom right corner of painting below.

However, the vast majority of the Spiritual Sky (3/4) is made up of the perpetual Vaikuntha Planets which are the abodes of the 4 armed form of God known Lord Vishnu, Narayana and billions of other names (a different name on each Vaikuntha Planet)

And the centre of Spiritual Sky is the massive central abode of Lord Krishna known as Goloka-Vrindavana, the abode of the two armed Krishna the Supreme Personality of Godhead and cause of ALL causes. 

The painting below shows the perpetual Vaikuntha Planets, the central Spiritual World of Goloka-Vrindavana, and in the bottom right hand cornor, the small material temporary creation.

This material creation is always in a state of impermanence, decline,  decay and repeated birth and death.

The material universes known as Brahmandas, but also called "material worlds", are created by Krishna's Vishnu-tattva expansion Maha Vishnu.  

The use of the word "World" here should not be confused with the small World or earth global planet we live on.

There are Billions of individual massive almost spherical Brahmanda universes that originate from Maha Vishnu's breathing, and from the pores of His skin as seen in painting.

There is also a secondary smaller material universe found deep inside each Brahmanda universe where Garbhodakashayi Vishnu, Brahma  and many planetary systems are found.

From Garbhodakashayi Vishnu, Lord Brahma is born from His navel and then builds or creates the different material planetary systems.

There are 14 planetary systems in our universe that is deep inside our Brahmanda.

However the size of the universe inside each Brahmanda are all different based on the number of heads their Lord Brahma has.

In our material universe, our Brahma has 4 heads, but in other universes, deep inside their Brahmanda, Brahma may have 10, 20, 50, 1000, 10,000 or even a million heads.

There are billions of Lord Brahmas, each with a different number of heads.

When Krishna was ruling Dvaraka, our Lord Brahma from our material universe inside our Brahmanda, came to see Him.

The doorman of Dvaraka immediately informed Lord Krishna of Brahma’s arrival.

When Krishna was informed, He immediately asked the doorman, "Which Brahma is it? What is his name, what universe is he from?"

The doorman returned and questioned Lord Brahma of which Brahma he was.

The doorman asked, "Which Brahma are you, which universe are you from?"

Lord Brahma was very surprised as he believed he was the only Brahma.

He told the doorman, "Please inform Lord Krishna that I am the four-headed Brahma who is the father of the four Kumaras".

The doorman then went and told Lord Krishna what Brahma had said, Lord Krishna then gave Brahma permission to enter.

The doorman escorted Lord Brahma in, and as soon as Brahma saw Lord Krishna he offered obeisances at His lotus feet.

After being worshiped by Brahma, Lord Krishna also honored him with suitable words.

Then Lord Krishna asked him, "Why have you come to visit me?

Brahma replied, "I will later tell You why I have come but first I have some doubts in my mind which I wish You too kindly answer.

Brahma then asked "Why did you inquire which Brahma had come to see You? What is the purpose of such an inquiry? Is there any other Brahma besides me within the universe?"

Upon hearing this, Krishna smiled and closed His eyes in meditation.

Immediately an unlimited number of Brahmas appeared instantly to the great suprise of our Brahma.

Furthermore all these Brahmas had a different numbers of heads.

Some had ten heads, some twenty, some a hundred, some a thousand, some ten thousand, some a hundred thousand, some ten million and others a hundred million.

No one can count the number of faces they had.

To Brahmas surprise, there also arrived many Lord Sivas with various heads numbering one hundred thousand and also some with ten million!

Many Indras also arrived, and they had hundreds of thousands of eyes all over their bodies.

When our four-headed Brahma from our single universe situated deep inside our Brahmanda saw all these opulences of Krishna, he became very bewildered and considered himself to be very small in a great universal creation far bigger than he knew existed!

As these Brahmas arrived to see Krishna, they offered their respects at Krishna’s lotus feet, and when they did this, their helmets touched His lotus feet.

No one can estimate the inconceivable potency of Krishna.

All the Brahmas who were there were resting in the one body of Lord Krishna the Supreme Personality of Godhead and cause of ALL causes.

When all their helmets struck together at Krishna’s ’s lotus feet, there was a tumultuous sound. It appeared that the helmets themselves were offering prayers unto Krishna’s lotus feet.

With folded hands, all the Brahmas and Sivas began to offer prayers unto Lord Krishna, saying, "O Lord, You have shown me a great favor. I have been able to see Your lotus feet."

All the Brahmas then said, "It is my great fortune, Lord Krishna, that You have called me, thinking of me as Your servant. Now let me know what Your order is so that I may carry it on all my heads."

Lord Krishna replied, "Since I wanted to see all of you together, I have called all of you here, all of you should be happy. Is there any fear from the demons?"

They replied, "By Your mercy, we are victorious everywhere, whatever burden was upon us You have taken away by descending on my planet in my universe."

All the Brahmas thought, "Krishna is now staying in my jurisdiction".

None of the Brahmas could see the other Brahmas except for our Brahma who Krishna allowed so he could understand he is not the only Brahma.

Thus the opulence of Krishna's abode Dvaraka was perceived by each and every one of the Brahmas.

As already explained, although they were all assembled together, no Brahma could see any other Brahma except themselves.

Lord Krishna then bade farewell to all the Brahmas, and after offering their obeisances, they all returned to their respective universes deep inside their respected Brahmanda.

After observing all these opulences, our four-headed Brahma from our universe was astonished. He again came before the lotus feet of Krishna and offered Him obeisances.

Brahma then said, "Whatever I formerly decided about my knowledge, I have just now had personally verified -

jananta eva janantu
kim bahuktya na me prabho
manaso vapuso vaco
vaibhavam tava gocarah

"There are people who say, 'I know everything about Krishna.' Let them think in that way. As far as I am concerned, I do not wish to speak very much about this matter. O my Lord, let me say this much. As far as your opulence’s are concerned, they are all beyond the reach of my mind, body and words." (Srimad-Bhagavatam Canto 10 Chapter 14 text 38)

Krishna said, "Your particular universe extends four billion miles in diameter; therefore it is the smallest of all the universes. Consequently you have only four heads.

Some of the universes are 8 billion miles in diameter, some are 8 trillion, some 80 trillion and some eight hundred trillion miles in diameter. Thus they are almost unlimited in area.

According to the size of a material universe, there are many heads on the body of Brahma. In this way I maintain innumerable material universe (Brahmandas).

No one can measure the length and breadth of one fourth of My energy. Who can measure the three fourths that is manifested in the spiritual world?

Beyond the River Viraja is a spiritual nature, which is indestructible, eternal, inexhaustible and unlimited.

It is the Supreme Abode consisting of three fourths of the Lord’s opulences. It is known as paravyoma, the Spiritual Sky.

(Adapted from Sri Caitanya Caritamrta Madhyalila chapter 21)

 

Painting above and below is Maha Vishnu with millions of Brahmanda material universes that all originate Him.

Maha Vishnu is surrounded here by unlimited Brahmanda universes that all originate from His bodily pores and breathing.

As seen in painting above, each Brahmanda universe has a secondary universe deep inside of them where Garbhodakashayi Vishnu, Lord Brahma and many Planetary Systems exist 

Inside each Brahmanda universal shell, a secondary material universe inside them are of different sizes, which also means all of them have a different number of Planetary Systems in them as well.

Our inner material universe deep inside our Brahmanda has 14 Planetary Systems in it that covers a 12.4 billion miles radius (4 billion miles in diameter)

This means surrounding Brahmanda universe our smaller universe is in, is massive. 

It is made of 7 or 8 layers of material qualities, both gross and subtle which is 44 quadrillion, 444 Trillion, 444 billion miles in diameter.

However, if that number is from just the outer edge of our inner material universe, then that distance is from one side of our universe to the surface of the Brahmanda.

This means the diameter of our Brahmanda universal shell we are incased in, is 88 quadrillion, 888 Trillion, 888 billion miles thick.

As explained above, there are 14 Planetary Systems in our material universe found deep inside our surrounding Brahmanda greater universe (universal shell)

In Goloka Vrindavana in the Spiritual Sky there are no demons, only when Krishna comes to the material creation as His Vishnu-tattva expansion, who plays the part of Krishna, does Krishna kill demons

Krishna as His original Form NEVER leaves Goloka-Vrindavana.

The Krishna that does come to the material universe, is actually a Vishnu-tattva expansion of the original Krishna in Goloka-Vrindavana who plays the part of child Krishna in the facsimile of the real Vrindavana in the material creation and even kills demons.  

However, in Goloka Vrindavana with the original Krishna there are no demons there.

Only in the material creation do demons exist who are killed not by Krishna directly, but by His Vishnu-tattva expansion who is playing the part of the original Krishna in the material creation.

Krishna is the original source of all Narayana or Vishnu forms who are all His expansions residing in the quadrillions of Vaikuntha Planets that surround His central abode of Goloka Vrindavana. 

Krishna further expands, via His first Vishnu-tattva expansion, Balarama as Maha Vishnu (Karanodakshayi Vishnu) who creates and manages the unlimited material universes called Brahmandas.

Krishna is the Supreme Personality of Godhead and cause of all causes, who resides in His personal abode known as Goloka-Vrindavan and NEVER leaves.

However, because Krishna is also the original source of all Narayana or Vishnu forms, who are all His expansions that reside in the quadrillions of Vaikuntha Planets that surround His central abode of Goloka Vrindavana.

Krishna also expands from His Vishnu-tattva form as copy of the original Krishna who then enters the material creation.

This Krishna is a Vishnu-tattva expansion from the original Krishna who is always in Goloka-Vrindavana and NEVER leaves.

Krishna further expands into the material creation, via His first Vishnu-tattva expansion, Balarama as Maha Vishnu (Karanodakshayi Vishnu) who creates and manages the unlimited material universes or material Worlds called Brahmandas.

These unlimited number of Brahmandas, coming from the Body of Maha Vishnu's pores and breathing, are massive individual material universes made up of material qualities (both subtle material energy and gross material elements), and all have a secondary material inner universe deep within each Brahmanda.

Each massive Brahmanda universe covers, encases and surrounds the inner material universe inside them with 7 layers of material qualities.

Maha Vishnu expands again as Garbhodakashayi Vishnu who creates this secondary inner material universe deep inside of the Brahmanda.

Then from Garbhodakashayi Vishnu, Brahma manifests who creates the different Planetary Systems within each inner material universe.

These Planetary Systems are spread through out the inner universe and appears as a flat looking disc made up of all the planets from all the many Planetary Systems.

All the Planetary Systems spread to nearly the edge of the inner single material universe where it meet the surrounding Brahmanda, as explained in Srimad Bhagavatam.

Because of the massive solid 7 material elements of the Brahmanda that surround the material universe within the Brahmanda, no one inside this inner universe can see outside of that confined universe as Srimad Bhagavatam also explains.

This means from within our small material universe inside our Brahmanda, we cannot see the billions of other Brahmanda's around it.

So to be clear, deep inside our Brahmanda, in the secondary universe within it, Brahma creates 14 different Planetary Systems.

Each inner material universe within their Brahmanda, has a different number of Planetary Systems according to their size.

Karanodakshayi Vishnu (Maha Vishnu) is actually sleeping and is always DREAMING the activities within each of the "secondary material universes" inside their Brahmanda.

Those dreams Maha Vishnu has, are all the activities happening within each of the Garbhodakashayi Vishnu's secondary universes.

In painting below Karanodakshayi Vishnu (Maha Vishnu) is seen laying down sleeping and Garbhodakashayi Vishnu is seen within each Brahmanda.

When Maha Vishnu dreams, He first creates the entire material universe known as the Maha-tattva (matter) which takes up 25% of the Spiritual Sky or Brahmajyoti.

The other 75% is the active Spiritual World (anti-matter) that is ever fresh, always youthful and never ending, known as the perpetual Vaikuntha Planets of Vishnu and Krishna's central abode of Goloka-Vrindavan.

Within Maha-Vishnu's 25% of the Spiritual Sky called the temporary material creation, we find is always in a state of decay, decline, impermanence.

It is where jiva-soul who have chosen to enter the material creation, are forced into repeated birth and death, forced to possess (or take) temporary material bodily vessels or containers.

The visiting souls in the material creation are forced to take repeated births again and again because the material bodies they are in simply wear out, get old, break down and eventually cease to operate.

So lets make it clear -

1 - Within this temporary material creation, we find unlimited individual massive single Brahmanda universes coming from the Body of Maha Vishnu.

2 - And deep inside each of those massive Brahmanda universes, there is a secondary smaller universe where Maha Vishnu expands Himself as Garbhodakashayi Vishnu.

3 - And from Garbhodakashayi Vishnu, Lord Brahma appears from His naval at the top of a lotus flower.

4 - Then Lord Brahma builds the many Planetary Systems inside each of the inner secondary universes deep inside their individual Brahmanda.

There is only one Maha Vishnu in the material creation yet an unlimited number of Garbhodakashayi Vishnus and Lord Brahmas.

Also it is important to understand, the amount of Planetary Systems deep inside each Brahmanda, vary in size, some larger and some smaller than others.

Our material universe within our Brahmanda has 14 Planetary Systems and is considered a small universe explained in Bhagavatam as only 4 billion miles in diameter.

Some Vedic Cosmologists think this figure of 4 billion miles in diameter describing our material universe inside our Brahmanda, is way too small of a figure and must have more to it.

Some Vedic scholars further suggest the figure of "4 billion miles" or "500,000 yojanas", as decribed in the 5th Canto of Srimad Bhagavatam, is really a code that needs decoding.

This is because they claim that just our Solar System is said to be 20 billion miles in diameter,  which is far bigger than the mere 4 billion miles diameter our ENTIRE material universe inside our Brahmanda is supposed to be. 

Another condition is measurements can be different on all the different Planetary Systems, just like the movement time is also different within all the planetary systems.

For example, 100 years on the Brahmaloka planet on the highest planetary system is 311 trillion and 40 billion human years long.

So there maybe far more to this figure that claims our material universe is just 4 billion miles in diameter.

Other universes inside their Brahmanda, have many more Planetary Systems than just 14, and are therefore much bigger than 4 billion miles in diameter.

The fact is, the size of each Brahmanda and their inner universe, depends on the how many heads Lord Brahma has.

Some Lord Brahmas, like ours, has only 4 heads, while other Brahma's within their universe inside their Brahmanda, may have 10, 20, 50, 500, 1000, 100,000 or even a million or more heads.

In this way, all the quadrillions of Brahmanda universes coming from the Body of the sleeping Maha Vishnu (as seen in painting below), ALL have a secondary inner universe deep inside it also seen in painting.

Each massive Brahmanda universe has 7 material coverings or layers that surround and enclose each of the inner secondary material universe.

This means the massive outer Brahmanda surrounding universe we are deep within, is 44 quadrillion 444 trillion 444 billion miles in diameter, or twice that size if the measurement is from the outer edge of the inside secondary universe.

If that is true then the full size of our Brahmanda is double the figure above or 88 quadrillion 888 trillion 888 billion miles in diameter.

The sleeping Maha Vishnu (Karanadakashayi Vishnu) expands Himself into the inner secondary universe deep inside each Brahmanda, as Garbhodakashayi Vishnu.

This secondary material universe is in the centre of each massive Brahmanda universe.

In the Bhagavatam, Bhu Mandala is the “earth mandala” (not to be confused with our small earth globe), is a disk 500 million yojanas in diameter (4 billion miles in diameter)

The word ''Earth'' has many meanings.

For example, our small Earth global round sphere is only 24,901 miles in circumference and is 7,917.5 miles in diameter, it is NOT Bhu-Mandala.

Bhu-Mandala is 500 million yojanas in diameter (4 billion miles in diameter or 12.6 billion miles in circumference).

A yojana is a unit of distance about 8 miles long, and so the diameter of Bhu Mandala is about 4 billion miles which is the size of our single universe.

Our Earth is NOT flat! It is a round global sphere.

Srila Prabhupada - "On the ground our earth looks flat but when you go up you will see our Earth planet is a ball" (Lecture New York 1966.)

The Sanskrit word "Dvīpa" has two meanings.

1 - "Islands" or "continents" on a Planet.

2 - "Globes or spheres" in outer space.

Bhu-Mandala is marked by circular features designated as islands (Dvipas that can also mean planets) and oceans.

Srila Prabhupada -"The "planets" are called "dvīpas". Outer space is like an ocean of air. Just as there are islands in the watery ocean, these planets in the ocean of space are called dvīpas, or islands in outer space" (Caitanya Caritamrita Madhya 20.218, Purport)

Therefore Bhu-Mandala is far too big to be our small earth globe.

But this does describe our small single universe with its 14 planetary Systems deep within our surrounding Brahmanda.

Therefore the 14 planetary Systems deep within our surrounding Brahmanda, would therefore fit in the circumference of Bhu-Mandala (4 billion miles (500,000,000 Yojanas) diameter)

The jiva soul can stay for an almost eternity in the temporary decaying material universes cycles of annihilation and creation if they choose.

When Lord Brahma dies after 100 of his years (311 trillion and 40 billion human years), there is an equal period of his life span of 311 trillion, 40 billion human years where nothing living exists, everything in the material universe remains dormant for that enormous amount of time.

Then the next material creation of Brahmanda's manifest from Maha Vishnu (Karanadakashayi Vishnu)

All jiva souls have merged as "individual units" into the Body of Karanadakashayi Vishnu (Maha Vishnu) and remain that way until the next creation of Brahmandas when they again manifest from Maha Vishnu's Spiritual Body as seen in painting below.

In other words, in the next new creation of Brahmandas coming from the Body of Maha Vishnu, all the dormant jiva souls awaken and continue on again within a secondary universe that is deep inside each Brahmanda outer universe, from where they left off in the previous inner material universe.

As explained, a secondary smaller universe is deep within each of the massive surrounding Brahmandas.

All lasts for 311 trillion and 40 billion human years, or the life span of Lord Brahma.

It is important to understand at the annihilation of each Brahmanda universe, and its inner secondary universe, Garbhodakashayi Vishnu temporarily merges back as one with Maha Vishnu until the next Brahmanda universes manifests from the breathing and pores of Maha Vishnu.

Then the process repeats itself, the sleeping Maha Vishnu (Karanadakashayi Vishnu) expands Himself into the inner secondary universe that is deep inside each Brahmanda as Garbhodakashayi Vishnu that is in the centre of each Brahmanda universe.

The jiva souls are suspended in ''inactivity'' (dormant) within the Body of Karanadakashayi Vishnu (Maha Vishnu) for 311 trillion 40 billion human years.

The jiva souls re-emerge and continue on (their karma) from where they left off in the previous creation.

64 qualities of Krsna the Supreme Personality of Godhead and cause of ALL causes.

Krsna has all 64 qualities all the time unlike His Visnu-tattva expansions. 

Krsna's Visnu-tattva (Visnu/Narayana) expansions of Krsna, who are also God, have only 60 of Krsna's 64 attributes or 93.75% of Krsna's qualities.

Some Vedic scholars and modern day Hindu academics cannot understand why Krsna has 4 more qualities than Visnu or Narayana, and why Krsna IS the ORIGINAL Supreme Personality of Godhead and cause of ALL causes and as His original Form never leaves Vṛndāvana.

They cannot understand that Visnu/Narayana are expansions of Krsna and NOT the other way around as many Hindus today wrongly believe.

Even the word Hindu is not found in Vedic texts and is an alien word introduced by European and barbaric Islamic invaders to the Indian subcontinent around 15 hundred years ago. 

As said above, Krsna is NOT an expansion of Visnu either as many Hindus wrongly believe today.

Krsna is the original Supreme Personality of Godhead and cause of ALL causes from who ALL Visnu forms originate from.

When Kṛṣṇa wants to come to the material worlds He personally does not come because He never leaves the Spiritual world

Instead, it is His 4 armed Visnu-tattva expansion who appears in the material creation in the form of the two armed Kṛṣṇa.  

The 4 qualities or attributes Visnu or Narayana do NOT have always but only partially display are as follows-

(1) Krsna is the performer of wonderful varieties of pastimes (especially His childhood pastimes).

(2) Krsna is surrounded by devotees endowed with wonderful love of Godhead.

(3) Krsna can attract all living entities all over the universes by playing on His flute.

(4) Krsna has a wonderful excellence of beauty which cannot be rivaled anywhere in the creation.

These four qualities out of Krsna's 64 attributes is important to understand because as said, not even Visnu/Narayana forms of God have them "in full", only sometimes exhibited partially.

All expansions of Krsna are-

1 - Visnu-tattva have 60 qualities out of Krsna's 64 attributes which is 93.75 of Krishna's total qualities.

2 - Visnu-"sakti"- tattvas (this category of sakti potency or energy means Srimati Radharani is also Visnu-tattva who has 60 qualities of Krsna's 64 qualities or 93.75 of Krsna's qualities, but can often exhibit all 64 qualities as seen in pastimes.

This is why it is said their is no difference between Radharani and Kṛṣṇa 

3 - Siva-tattva has 55 qualities out of Krsna's 64 attributes or 84.375% of Krsna's qualities and is in a league of His own. 

4 - Jiva-tattva souls have 50 qualities of Krsna's 64 attributes which is 78.125% of Krsna's qualities, and are endowed with free will which means they have an individual personality separate from Krsna's Personality.

The Supreme Personality of Godhead Lord Krsna has all sixty four transcendental qualities in full.

So the difference between Krsna (64 qualities) and Visnu/Narayana (60 qualities) are the four extra qualities that only Krsna has all the time.

The full extent of Krsna's wonderful qualities or attributes are inconceivable.

Here are Krsna's 64 qualities or attributes -

(1) Beautiful features of the entire body

(2) Marked with all auspicious characteristics

(3) Extremely pleasing

(4) Effulgent

(5) Strong

(6) Ever youthful

(7) Wonderful linguist

(8) Truthful

(9) Talks pleasingly

(10) Fluent

(11) Highly learned

(12) Highly intelligent

(13) Genius

(14) Artistic

(15) Extremely clever

(16) Expert

(17) Grateful

(18) Firmly determined

(19) An expert judge of time and circumstances

(20) Sees and speaks on the authority of Vedas, or scriptures

(21) Pure

(22) Self-controlled

(23) Steadfast

(24) Forbearing

(25) Forgiving

(26) Grave

(27) Self-satisfied

(28) Possessing equilibrium

(29) Magnanimous

(30) Religious

(31) Heroic

(32) Compassionate

(33) Respectful

(34) Gentle

(35) Liberal

(36) Shy

(37) The protector of surrendered souls

(38) Happy

(39) The well-wisher of devotees

(40) Controlled by love

(41) all-auspicious

(42) Most powerful

(43) all-famous

(44) Popular

(45) Partial to devotees

(46) Very attractive to all women

(47) all-worship able

(48) all-opulent

(49) all-honourable

(50) The supreme controller.

(51) Changeless

(52) all-cognizant

(53) Ever fresh

(54) sac-cid-ananda-vigraha- eternity, knowledge, bliss and
always as an eternally youthful bodily Form.

(55) Possessing all mystic perfections.

(56) He has inconceivable potency.

(57) Uncountable universes generate from His body.

(58) He is the original source of all incarnations.

(59) He is the giver of salvation to the enemies whom He kills.

(60) He is the attractor of liberated souls.

Besides these sixty transcendental qualities, Krsna has four more, which are not manifested even in the Visnu/Narayana form of Godhead, what to speak of the demigods or living entities.

They are as follows:

(61) He is the performer of wonderful varieties of pastimes (especially His childhood pastimes).

(62) He is surrounded by devotees endowed with wonderful love of Godhead.

(63) He can attract all living entities all over the universes by playing on His flute.

(64) He has a wonderful excellence of beauty which cannot be rivaled anywhere in the creation.

This is the reason why Krsna is called Param Purushottam, Purnavatar or Supreme Personality of Godhead and cause of all causes. 

Srila Prabhupada - "Learned scholars in transcendental subjects have carefully analyzed the summum bonum Krsna to have sixty-four principal attributes.

All the expansions or categories of the Lord possess only some percentages of these attributes. But Sri Krsna is the possessor of the attributes cent percent.

And His personal expansions such as svayam-prakasa, tad-ekatma up to the categories of the avataras who are all visnu-tattva, possess up to 93.75% of these transcendental attributes." (SB Canto 1 Ch 3 text 29)

Lord Siva is neither avatara nor avesa, nor in between them, he possesses 84.375% of Krsna's attributes.

But the jiva-souls or the individual marginal living entities possess up to the limit of 78.125% of Krsna's qualities which is having 50 of His 64 attributes.

In the conditioned state within material existence, the marginal living entities or jiva-souls trapped there, exhibit these attributes in very minute quantities, and varying in terms of the pious and impious life of the living being.

Only in the spiritual worlds are the jiva-soul's full potential of 78.125% fully experienced.

The most perfect of living beings in this material universe is Brahma, the supreme administrator of each material universe deep inside their surrounding Brahmanda greater universe.

Lord Brahma, who is jiva-tattva, possesses 78.125% percent of Krsna's 100% attributes.

All the demigods except Siva have only 78.125% attributes or have 50 of Krsna's 64 qualities also. 

And all species of material life also possess these same attributes in their full potential because they are also jiva-tattva but are covered by material enegy.

The standard of perfection for a human being is to develop their full potential of up to 78.125% in full. 

The marginal living entities or jiva-tattvas can NEVER possess attributes like Siva, Visnu, Radharani or Lord Krsna.

A living being or marginal living entity (jiva-souls) can become godly by developing their full potential of 78.125% of their attributes but can NEVER become a God like Krsna or Visnu.

Although, as said, he can become a Brahma in due course.

The godly living beings who are all residents of the Vaikuntha planets in the spiritual sky, are eternal associates of Visnu in different spiritual planets called Hari-dhama and Mahesa-dhama.

However, the abode of Lord Krsna Goloka Vrindavana is above all the Vaikuntha planets and is called Krsnaloka or Goloka Vrndavana.

The marginal living entity (jiva-soul) can develope 78.125% of the above attributes in full, which is their full potential, they can NEVER become Krsna or Visnu.

By reaching there full potential of 78.125%, the jiva tattva souls can AGAIN enter the planet of Krsna-loka (Goloka-Vrindavana) after leaving their present decaying material bodily vessel.***.