Sixth Doom
Satan
Revelation 20:10

As punishment for his acts of rebellion, satan shall be taken by the angel that had chained him and threw him into the Lake of Fire where he will find alive and waiting for him the Beast/Antichrist and the False Prophet who were cast in there a 1000 years before.

        This shows that there isn't such a thing as annihilation. The Lake of Fire was prepared for the devil and his angels, not to consume them because God could have done that with fire from heaven but it is to punish them and all those whose names aren't written in the Book of Life. It's where they will spend eternity.