Revelation 20:7-9

7And when the thousand years have been completed, Satan shall be loosed from his prison,

8and shall go out to deceive the nations which [are] in the four corners of the earth, Gog and Magog, to gather them together to the war, whose number [is] as the sand of the sea.

9And they went up on the breadth of the earth, and surrounded the camp of the saints and the beloved city: and fire came down [from 1God] out of the heaven and devoured them.