While in the impersonal Brahman, they inactively hover for a very, very, very, very long time, so long in fact that they are think this impersonal Brahman is their origin when they eventually emerge from it.

All sins will be wiped clean by Kalki killing the material bodily vessels occupied those souls left at the end of Kali-yuga.

Because when the demonic are liberated by God, the jiva will enter the impersonal Brahman.

While there, they inactively hover for a very, very, very, very long time, so long in fact that they are deluded to think this impersonal Brahman is their origin when they eventually emerge from it.

They have forgetten they first fell to this impersonal Brahman or impersonal Brahmajyoti in the first place.

So AGAIN they are getting another chance to enter the material creation in the lowest material bodily vessel, an amebha which is smaller than virus and bacterial life forms.

From there they gradually evolve through the lower species, Aquatic, to plant, insect, bird, and gradually progress to an animal bodily vessel.

And then again, after billions of billions of years in animal forms, is given another chance to enter the very material rare "human bodily" form.

Only in the human container can one inquire about God or miss use it to exploit others and material nature.

Reaching the human form is extremely rare and becoming a devotee is the rarest of all in this material creation.