Revelation 20:7-10

God sends Satan into the lake of fire

7 When the 1,000 years have finished, God will let Satan go free out of his prison. 8 Satan will then go and deceive people in nations everywhere in the world. He will make them believe him. Those nations are God's enemies, Gog and Magog. Satan will bring them together to fight a war against God's people. Satan's army has many people, as much as the sand on the shore of the sea. 9 I saw them as they marched over the whole earth. They arrived at the city which God loves. That is where God's people had made their camp. Satan's army made their camp all around the city. Then fire came down from heaven and it destroyed them completely. 10 The Devil had deceived those people. I saw God throw him into the lake of fire that burns with sulphur. That is the lake where he had already thrown the wild animal and the false prophet. They will have a lot of pain in that place, all day and all night for ever.

20:8The prophet Ezekiel spoke about Gog, the leader, and Magog, his people, as great enemies of God's people Israel. He spoke about them many years before Jesus was born. See Ezekiel 38-39. Ezekiel said that God would destroy these enemies with fire from heaven. God himself would destroy them because they were such great enemies of his people. So John uses the same names when he describes the last war between God's people and Satan's people.
20:8There is so much sand on the shore of the sea that nobody could ever count the bits of sand.