Revelation 20:7

Modern King James Version

And when the thousand years have expired, Satan will be loosed out of his prison.

Cross References

Revelation 20:2

And he laid hold on the dragon, that old serpent, who is the Devil and Satan, and bound him a thousand years.

Revelation 9:15

And the four angels were loosed, who were prepared for an hour, and a day, and a month, and a year, in order to slay the third part of men.