Then I saw an angel coming down from heaven, 1holding in his hand the key to 2the bottomless pit and a great chain.
References for Revelation 20:1
And he seized 3the dragon, that ancient serpent, who is the devil and Satan, and 4bound him for a thousand years,
References for Revelation 20:2
and threw him into 5the pit, and shut it and 6sealed it over him, so that 7he might not deceive the nations any longer, until the thousand years were ended. After that he must be released for a little while.
References for Revelation 20:3
Then I saw 8thrones, and 9seated on them were those to whom the authority to judge was committed. Also I saw 10the souls of those who had been beheaded for the testimony of Jesus and for the word of God, and those 11who had not worshiped the beast or its image and had not received its mark on their foreheads or their hands. 12They came to life and 13reigned with Christ for a thousand years.
References for Revelation 20:4
The rest of the dead did not come to life until the thousand years were ended. This is the first resurrection.
14Blessed and holy is the one who shares in the first resurrection! Over such 15the second death has no power, but they will be 16priests of God and of Christ, and they 17will reign with him for a thousand years.
References for Revelation 20:6