Chapter twenty reveals some information about the long-anticipated kingdom of God that had remained a mystery to this point. First, Satan will be imprisoned during this period, unable to “deceive the nations” (Revelation 20:1-3). Second, this kingdom should not be confused with the eternal state, as so many of the Hebrew prophets did. Instead, John discovered that it would last only 1,000 years (Revelation 20:2, 3, 4, 5, 6, 7). The fact that this number is repeated so many times cannot be overstated. Third, whereas the Church saints will be resurrected at the Rapture, the Old Testament and Tribulation saints will be resurrected after the Second Coming, before the Kingdom (Revelation 20:4; Daniel 12:1-3, 11-13). Fourth, this leaves only the unbelievers of all time still dead. They will be resurrected at the end of the Millennial Kingdom (Revelation 20:5).
At the end of the 1,000 years, Satan will be released for one final revolt. He will gather together all unbelievers who will live through the Millennium but will never accept Jesus’ Messiahship. They will attack Jerusalem once more and fail. At this point, Satan himself will be “thrown into the lake of fire and sulfur” (Revelation 20:10). An important note is that, even though it will have been 1,000 years, “the beast and the false prophet” will still be there (Revelation 20:10). This verse is a strong support for the doctrine of eternal punishment.
The final judgment on all unbelievers of all time will take place in front of the Great White Throne. There they will be presented with all of their deeds and be judged for them. This will apparently affect the level of punishment in the lake of fire, but will not affect whether or not they go there. The only thing that determines their destination is whether or not their names are “found written in the book of life” (Revelation 20:15). All unbelievers will be “thrown into the lake of fire,” where they will join Satan, the beast, the false prophet, and the wicked angels (Matthew 25:41) forever.