Revelation 20:4-9

4And then I saw thrones, and sitting on them were those to whom judgment [that is, the authority to act as judges] was given. And I saw the souls of those who had been beheaded because of their testimony of Jesus and because of the word of God, and those who had refused to worship the beast or his image, and had not accepted his mark on their forehead and on their hand; and they came to life and reigned with Christ for a thousand years.

5The rest of the dead [the non-believers] did not come to life again until the thousand years were completed. This is the first resurrection.

6Blessed (happy, prosperous, to be admired) and holy is the person who takes part in the first resurrection; over these the second death [which is eternal separation from God, the lake of fire] has no power or authority, but they will be priests of God and of Christ and they will reign with Him a thousand years.

7And when the thousand years are completed, Satan will be released from his prison (the abyss),

8and will come out to deceive and mislead the nations which are in the four corners of the earth—[including] Gog and Magog—to gather them together for the war; their number is like the sand of the seashore.

9And they swarmed up over the broad plain of the earth and surrounded the camp of the saints (God’s people) and the beloved city [Jerusalem]; but fire came down from heaven and consumed them.