The eternal individual jiva-souls (perpetual anti-matter) can enter or possess and experience any material bodily container or vessel (covered by temporary matter) they choose over an infinity.

This is because the individual jiva-souls are beginningless and endless like Kṛṣṇa and were never created.

However, the eternal jiva-soul's (anti-matter)existence in a temporary material body only lasts for a short time period because of the material bodily vessel's limited existence due to decay and ultimate breakdown of biological matter that covers the eternal indestructible jiva-souls (anti-matter).

The eternal jiva-souls (anti-matter) are different from the decaying material bodily vessel (matter) that covers the individual jiva-souls who are eternal spiritual living PERSONS appearing as a perpetual spiritual bodily form that can NEVER be destroyed, terminated, divided into pieces, extinguished or lose their unique individual identity as an independent voluntary contributing "person" because they are indestructible.

All outer material bodies (matter) that covers the eternal individual jiva-souls (anti-matter), eventually breaks down, decomposes and again merges back into the "oneness" of the material energy (matter) that all material bodily vessels or containers are made from in the material world.

Bhagavad Gita As It Is - “Never was there a time when I did not exist, nor you, nor all these kings; nor in the future shall any of us cease to be.” (BG, Ch 2 text 12)

Bhagavad Gita As It Is - “As the embodied soul continuously passes, in this body, from boyhood to youth to old age, the soul similarly passes into another body at death. A sober person is not bewildered by such a change." (BG, Ch 2 text 13)

Bhagavad Gita As It Is - "For the soul there is neither birth nor death at any time. He has not come into being, does not come into being, and will not come into being. He is unborn, eternal, ever-existing and primeval. He is not slain when the body is slain." (BG, Ch 2 text 20 “corrected” 1983 edition)

Bhagavad Gita As It Is - "O Pārtha, how can a person who knows that the soul is indestructible, eternal, unborn and immutable kill anyone or cause anyone to kill?" (BG, Ch 2 text 21)

Bhagavad Gita As It Is - "As a person puts on new garments, giving up old ones, the soul similarly accepts new material bodies, giving up the old and useless ones." (BG, Ch 2 text 22)

Bhagavad Gita As It Is - "The soul can never be cut to pieces by any weapon, nor burned by fire, nor moistened by water, nor withered by the wind." (BG, Ch 2 text 23)

All individual jīva-souls are ETERNAL unique persons as a spiritual bodily form, therefore there are no new jiva-souls being created because they have ALWAYS existed meaning they are beginningless and endless.

Srila Prabhupada – "There are no new souls, new and old are due to this material body, but the jiva-soul is never born and never dies, so if there is no birth, how can there be new souls?" (Letter to Jagadisa dasa 9 July 1970)

The individual jiva-souls (marginal living entities) have no origin or beginning point because they have ALWAYS existed for infinity as explained above.

So, clearly there is no origin or beginning point to Krsna's marginal energy (an unlimited number of individual jiva-souls), who have existed for as long as Krsna has existed and will continue to exist for eternity (infinity).

Devotee - "Many say, 'why do you worry so much about death? We are living and enjoying life now, why do you worry about death?"

Srila Prabhupada - "Because we are intelligent, therefore, you'll die and become a dog because of that ignorance of living for the moment (like the animal kingdom live), so I am taking sympathy on you, that 'don't become a dog in your next life.' The example is given, just like a child is flying a kite and is going this way and that way on the roof, dangerously near the edge of the roof. So one gentleman standing nearby and shouts, 'Hey, you'll fall down!' That is his duty. But the boy replies, 'Why you are checking me? Why you are checking on me?' The gentleman relies, 'because I am human being trying to protect you, you are a foolish boy, therefore, I am checking on you.' This is natural, even though the child is not his son, because he is a gentleman he wants to give him some protection. It is the duty of gentleman."(Conversation, New Vrindavan, June 24, 1976)**