Revelation 20:2-4

2He overpowered the serpent, that ancient snake, named Devil and Satan. The angel chained up the serpent for 1,000 years.

3He threw it into the bottomless pit. The angel shut and sealed the pit over the serpent to keep it from deceiving the nations anymore until the 1,000 years were over. After that it must be set free for a little while.

4I saw thrones, and those who sat on them were allowed to judge. Then I saw the souls of those whose heads had been cut off because of their testimony about Jesus and because of God’s word. They had not worshiped the beast or its statue and were not branded on their foreheads or hands. They lived and ruled with Christ for 1,000 years.