The individual jiva-souls are eternal "persons" as a spiritual bodily form.

This means each individual jiva-soul (marginal living entity) is a unique spiritual bodily form eternally, no individual jiva-souls are the same, they are all individual personalities.

The spiritual energy is not all-one, it is a unlimited collection of "individual eternal jiva-souls" as spiritual bodily forms who are voluntarily acting (serving) in unlimited ways in Krsna's pastimes.

Each individual jiva-soul expresses their own unique personality and character endowed with the free will, so they can voluntarily serve Krsna in 5 different ways or pastimes as explained in the Book "Nectar of Devotion."

The eternal spiritual bodily form of the individual jiva-soul is-

sat, 

cit, 

ananda, 

vigraha.

These words mean- 

eternity, 

knowledge, 

bliss, 

form.

Fortunately, over 90% of eternal individual jiva-souls choose to remain in the spiritual world's of the Vaikuntha planets and Goloka-Vrindavana even though they can choose to leave if they want. 

However, almost 10% do choose to leave the spiritual world and enter the material creation via the dreams of Maha-Visnu.

The individual jiva-souls have the free will to make their own choices which includes even rejecting Krsna if they choose to do so. This freedom Krsna allows, otherwise free will has no meaning and voluntary loving exchanges can never exist.

In the spiritual world's of Visnu/Narayana's Vaikuntha planets, and Krsna’s central planet of Goloka-Vrindavana, the individual jiva-soul's relationship with Visnu and Krsna is always voluntary.

The individual contributions of the eternal jiva-souls (devotees) are always expressed in both the Vaikuntha planets, and Goloka-Vrindavana in a "two-way" reciprocal exchange that Krsna encourages to create diversity, individual contributions, and a "two-way" mood of voluntary cooperation and service.

In the spiritual world the eternal jiva-souls are never forced to surrender to Krsna against their will, or do anything they choose not to do. 

For loving service and exchanges to truly exist, the individual jiva-souls must be able to act on their free will and make their own choices,  decisions and offerings (freedom of expression),  even if that also means rejecting Krsna if they choose, otherwise there can be no meaning to voluntary loving exchanges or free will.

Each eternal jiva-soul can voluntarily express themselves as an independent individual that allows them to experience unique loving exchanges, reciprocation in a two-sided  personal relationship of cooperation.

Srila Prabhupada - "So, unless there is a possibility of misusing our free will, there is no question of freedom." (Dialectical Spiritualism, Critique of Descartes)

This quality of free will is part and parcel of the individual jiva-soul's marginal constitution that allows them to be the independent free thinking separate expansion of the Krsna they eternally are. 

Therefore being a marginal living entity (jiva-soul) also means having free will that is included when describing the qualities and constitution of the individual jiva-souls. 

As said above, Krsna allows this freedom the jiva-souls have because without free will loving exchanges, personal offerings and a two-way reciprocal relationship with Krsna could never exist.

Srila Prabhupada – "You have got little independence therefore you can violate. Because you are part and parcel of God you have got independence, proportionately, therefore if he likes he can return to the material atmosphere. That independence has to be accepted, little independence. We can misuse that."(Mayapur, Feb 19, 1976)

Having free will is the eternal constitutional make up of all marginal living entities (jiva-souls)

Fee will is eternally part and parcel of their individual character and personality in the spiritual world.

This means the individual jiva-souls can choose to leave   Visnu/Narayana Vaikuntha planets, or Krsna’s Personal abode of Goloka-Vrindavana if they choose, at anytime.

It is nonsense to claim the eternal jiva-souls can never again fall down in the Vaikuntha planets or Goloka-Vrindavana.

This is because free will always allows them to always have a choice, and without that freedom to voluntarily choose, there is no question of loving exchanges or free will.

So, the choice to even leave the Vaikuntha planets or Goloka-Vrindavana, is always possible because Krsna allows a "two-way" relationship where one can accept or reject Krsna if they choose.

Srila Prabhupada - "Free will means that you can act wrongly. That is free will, unless there is chance of doing wrong or right, there is no question of free will. Where is free will then? If I act only one sided, that means I have no free will. Because we act sometimes wrongly, that means free will."

Hayagriva dasa - "A man may know better but still act wrongly."

Srila Prabhupada - "Yes, but that is free will He misuses his. Just like a thief, he knows that his stealing is bad but still he does it. That is free will. He cannot check his greediness, so in spite of his knowing that he is doing wrong thing—he will be punished, he knows; he has seen another thief, he was punished, he was put into prison— everything he knows, but still he steals. Why? Misuse of free will. Unless there is misuse of free will, there is no question of free will." (Talk on Rene Descartes philosophy with Prabhupada)

There is only one classification of eternal individual jiva-souls, not two as some scholars claim. 

Therefore, each individual jiva-soul has "two-sides" to their personality, they can be either "nitya baddha" i(conditioned in the material world and the impersonal brahmajyoti), or can be "nitya-siddha" (liberated in the Vaikuntha planets and Goloka-Vrindavana)

In this way the individual jiva-souls can choose for themselves to be with Krsna, or reject Krsna.

This is because each eternal individual jiva-soul, as part of their spiritual constitutional make-up, has the free will to be with Krsna, or reject Krsna.×÷×.