Revelation 20:7-8

And when the thousand years will have been completed, Satan shall be released from his prison, and he will go out and seduce the nations which are upon the four quarters of the earth, Gog and Magog. And he will gather them together for battle, those whose number is like the sand of the sea. And they climbed across the breadth of the earth, and they encompassed the camp of the Saints and the Beloved City.