Vs. 7-10. These verses give us the post-millennial period. Satan is loosed; and goes out to deceive the nations; Gog and Magog are mentioned; these nations are gathered to battle against the people of God, and God destroys them with fire from heaven. Then the devil that deceived them is cast into the lake of fire where that beast and false prophet were put, as we saw at the end of the nineteenth chapter. This lake of fire is the final abode of the devil and his followers, and is afterward described as the second death. This passage has some resemblance to Ezekiel 38:1-23; Ezekiel 39:1-29 where Gog and Magog are mentioned as northern nations that come up against Israel. John usually borrows his imagery from the Old Testament, and this is the imagery of the past applied to a future event.