God's work does not cease until He restores His Kingdom.
The concept of a kingdom of God is not readily apparent in the Old Testament until God provides the prophet Daniel with
some detail (Dan 2:26-45).
And in the New Testament, Jesus makes clear that Satan is the ruler of this world
(John 12:31; 16:10-11).
Thus, God continues to work (John 6:29) until the judgments of the book of Revelation
come to pass, and the creation of a new earth, new heaven (atmosphere about earth), and new Jerusalem.
Then I saw a new heaven and a new earth; for the first heaven and the first earth passed away, and there is no
longer any sea. And I saw the holy city, new Jerusalem, coming down out of heaven from God, made ready as a bride adorned for her husband.
And I heard a loud voice from the throne, saying, "Behold, the tabernacle of God is among men, and He will dwell among them, and they
shall be His people, and God Himself will be among them, and He will wipe away every tear from their eyes; and there will no longer be any
death; there will no longer be any mourning, or crying, or pain; the first things have passed away." And He who sits on the throne said,
"Behold, I am making all things new." And He said, "Write, for these words are faithful and true." Then He said to me, "It is done. I
am the Alpha and the Omega, the beginning and the end. I will give to the one who thirsts from the spring of the water of life without
cost. (Rev 21:1-6)
To learn more, see:
What does the "Kingdom of God" mean in the Old Testament?
Why is the Kingdom of God a secret?
New Heaven and New Earth