Satan bound for a thousand years
20 1-3 Then I saw an angel coming down from Heaven with the key of the pit and a huge chain in his hand. He seized the dragon, the serpent of ancient days, who is both the devil and Satan, and bound him fast for a thousand years. Then he hurled him into the pit, and locked and sealed it over his head, so that he could deceive the nations no more until the thousand years were past. But then he must be set free for a little while.
The first resurrection
4-6 And I saw thrones, with appointed judges seated upon them. Then I saw the souls of those who had been executed for their witness to Jesus and for proclaiming the Word of God—those who never worshipped the animal or its statue, and had not accepted its mark upon their foreheads or their hands. They came to life and reigned with Christ for a thousand years. (The rest of the dead did not come to life until the thousand years were over.) This is the first resurrection. Happy and holy is the one who shares in the first resurrection! The second death cannot touch such men; they shall be priests of God and of Christ, and shall reign with him for the thousand years.
Satan finally destroyed
7-8 Then, when the thousand years are over, Satan will be released from his prison, and will set out to deceive the nations in the four corners of the earth, Gog and Magog, and to lead them into battle. They will be as numerous as the sand of the seashore.
9-10 They came up and spread over the breadth of the earth; they encircled the army of the saints defending the beloved city. But fire came down from the sky and consumed them. The devil who deceived them was hurled into the lake of fire and sulphur to join the animal and the false prophet. And there they shall be tortured day and night for timeless ages.
The final judgment
11 And then I saw a great white throne, and one seated upon it from whose presence both earth and sky fled and vanished.
12-13 Then I saw the dead, great and small, standing before the throne and the books were opened. And another book was opened, which is the book of life. And the dead were judged by what was written in the books concerning what they had done. The sea gave up its dead, and death and the grave gave up the dead which were in them. And men were judged, each according to what he had done.
14-15 Then death and the grave were themselves hurled into the lake of fire, which is the second death. If anyone’s name was not found written in the book of life he was thrown into the lake of fire.