Revelation 20:8

8 and shall go out to deceive the Gentiles which are upon the four corners of the earth, Gog and Magog, to gather them together to battle; the number of whom is as the sand of the sea.

Revelation 20:8 In-Context

6 Blessed and holy is he that has part in the first resurrection; on such the second death has no authority, but they shall be priests of God and of the Christ and shall reign with him a thousand years.
7 And when the thousand years are expired, Satan shall be loosed out of his prison
8 and shall go out to deceive the Gentiles which are upon the four corners of the earth, Gog and Magog, to gather them together to battle; the number of whom is as the sand of the sea.
9 And they went up on the breadth of the earth and compassed the camp of the saints about and the beloved city; and fire came down from God out of heaven and devoured them.
10 And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and they shall be tormented day and night for ever and ever.
The Jubilee Bible (from the Scriptures of the Reformation), edited by Russell M. Stendal, Copyright © 2000, 2001, 2010