I

Those who are able to stand firm during God's work of judgment and chastisement in the last days—that is, during the final work of purification—will be the ones who will enter into the final rest alongside God; as such, all those who enter into rest will have broken free of Satan's influence and been gained by God only after having undergone His final work of purification. These humans, who will have been finally gained by God, will enter into the final rest.

II

The purpose of God's work of chastisement and judgment is in essence meant to purify humanity, for the ultimate day of rest; otherwise all of humanity couldn't be sorted according to their kind, or enter into rest. This work is humanity's only path to enter into rest. Only God's work of purification will cleanse humans' unrighteousness, and only His work of chastisement and judgment will expose those rebellious elements of humanity, thereby distinguishing those who can be saved from those who cannot, and those who will remain from those who will not.

III

When this work ends, those people who are allowed to remain will all be cleansed and enter a higher realm of humanity in which they'll enjoy a more wonderful second human life upon the earth; in other words, they will enter their human day of rest, and coexist with God. After those who are not allowed to remain have been chastised and judged, their true colors will be entirely exposed, after which they will all be destroyed and, like Satan, will no longer be permitted to survive upon the earth.

IV

The sole purpose behind God's ultimate work of punishing evil and rewarding good is to thoroughly purify all humans so that He may bring a purely sanctified humanity into eternal rest. This stage of His work is the most crucial; it is the final stage of the whole of His work of management. If God did not destroy the evil, but instead allowed them to remain, then all of humanity would still be unable to enter into rest, and God would not be able to bring them into a better realm. Such work would not be completely finished. When His work is finished, the whole of humanity will be entirely sanctified; only in this way will God be able to live in rest peacefully.

from The Word, Vol. 1. The Appearance and Work of God. God and Man Will Enter Into Rest Together