The Absolute truth is sac-cid-ananda-vigraha.

Which means-

eternity-knowledge-bliss-form.

Srila Prabhupada - "The Complete Whole, or the Supreme Absolute Truth, is the complete Personality of Godhead. Realization of impersonal Brahman or of Paramatma, the Supersoul, is incomplete realization of the Absolute Complete. 

The Supreme Personality of Godhead is sac-cid-ananda-vigraha. 

Realization of impersonal Brahman is realization of His sat feature, or His aspect of eternity.

And Paramatma realization is realization of His sat and cit features, His aspects of eternity and knowledge. 

But realization of the Personality of Godhead is realization of all the transcendental features-

sat, cit and ananda, bliss. 

When one realizes the Supreme Person, he realizes these aspects of the Absolute Truth in their completeness. 

Vigraha means "form." 

Thus the Complete Whole is not formless. If He were formless, or if He were less than His creation in any other way, He could not be complete. 

The Complete Whole must contain everything both within and beyond our experience; otherwise He cannot be complete.

The Complete Whole, the Personality of Godhead, has immense potencies, all of which are as complete as He is. Thus this phenomenal world is also complete in itself. 

The twenty-four elements of which this material universe is a temporary manifestation are arranged to produce everything necessary for the maintenance and subsistence of this universe. 

No other unit in the universe need make an extraneous effort to try to maintain the universe. 

The universe functions on its own time scale, which is fixed by the energy of the Complete Whole, and when that schedule is completed, this temporary manifestation will be annihilated by the complete arrangement of the Complete Whole.

All facilities are given to the small complete units (namely the living beings) to enable them to realize the Complete Whole. 

All forms of incompleteness are experienced due to incomplete knowledge of the Complete Whole. 

The human form of life is a complete manifestation of the consciousness of the living being, and it is obtained after evolving through 8,400,000 species of life in the cycle of birth and death. 

If in this human life of full consciousness the living entity does not realize his completeness in relation to the Complete Whole, he loses the chance to realize his completeness and is again put into the evolutionary cycle by the law of material nature.

Because we do not know that there is a complete arrangement in nature for our maintenance, we make efforts to utilize the resources of nature to create a so-called complete life of sense enjoyment. 

Because the living entity cannot enjoy the life of the senses without being dovetailed with the Complete Whole, the misleading life of sense enjoyment is illusion. 

The hand of a body is a complete unit only as long as it is attached to the complete body. 

When the hand is severed from the body, it may appear like a hand, but it actually has none of the potencies of a hand. 

Similarly, living beings are part and parcel of the Complete Whole, and if they are severed from the Complete Whole, the illusory representation of completeness cannot fully satisfy them.

The completeness of human life can be realized only when one engages in the service of the Complete Whole. 

All services in this world--whether social, political, communal, international or even interplanetary--will remain incomplete until they are dovetailed with the Complete Whole. 

When everything is dovetailed with the Complete Whole, the attached parts and parcels also become complete in themselves." (Sri Isopanisad, Invocation Purport)

The individual jiva-souls (marginal living entities) are separate "persons" in the Spiritual worlds who "choose" to "voluntarily" serve Krsna in an unlimited variety of ways.

The constitutional position of the marginal living entities (jiva-souls) are part and parcels of Krsna, being His eternal loving servants in their original eternal position.

Srila Prabhupada - "The "immediate" expansions of the Lord are called svāṁśa or "personal direct" expansions (known as Visnu-tattva, where the Lord plays a different role in His own pastimes). The "separated" expansions of the Krsna are called vibhinnāṁśa - (jiva-souls endowed with independence and free will) like us." (From BG 10.37, Purport)

The jiva-souls are a spiritual bodily form that "originally" look like Krsna's two-armed bodily form in the spiritual world, and have their own unique personality separate from the Krsna's Personality.

Srila Prabhupada - "The human form is the full manifestation of the jiva-soul." (Melb, May 20, 1975)

Devotee – "Is the original body of the jiva-soul a human form?"

Srila Prabhupada – "Yes, human form. God is also human form. "Man is made after the shape of God." I think there is in the Bible. Is it not? So God is also like human form. Here you see Krsna, two hands, two legs."

Hari-sauri – "How do we understand, then, that there are peacocks and flowers and trees in the spiritual world? Are these not eternal forms?"

Srila Prabhupada – "[describing material form first]: Yes, they are more covered, just like if you cover your body with blanket, the hands and legs are invisible. But you are not the blanket. So the trees and plants, they are more covered. They are not in full manifestation. The human form is the full manifestation of the jiva-soul."

Hari-sauri - "They are covered in the spiritual world?"

Srila Prabhupada - "Not in the spiritual world. There that is voluntary. Some devotees want to serve Krsna as flower; then they become flower there, they lie down at the lotus feet of Krsna as a flower voluntarily, but he can change his form from flower to human body if one wants. That is spiritual life. There is no restriction. If some devotee wants to serve Krsna as cow, he serves Krsna as cow, as calf, as flower, as plant, as water, as ground, field, or as father, as mother, as friend, as beloved, anything. It is inconceivable, yet a fact." (SB Canto 6 Ch 1 text 1-4 - Melb, May 20, 1975)

As said above, the original eternal form of the marginal living entity (jiva-soul) is a "two-arm form" like Krsnas (that the human species also have).

Further more, the jiva-souls in Goloka-Vrindavana can choose to enter the Vaikuntha planets where they manifest from their "two-armed form" to a "four armed form" similar to Visnu/ Luxmi's bodily forms. *