Revelation 20:7

New Century Version

When the thousand years are over, Satan will be set free from his prison.

Cross References

Revelation 20:2

The angel grabbed the dragon, that old snake who is the devil and Satan, and tied him up for a thousand years.

Revelation 9:15

And they let loose the four angels who had been kept ready for this hour and day and month and year so they could kill a third of all people on the earth.