'Thousand Years' in the Bible

He seized the dragon, the ancient serpent, who is the devil and Satan, and bound him for a thousand years.

Then he hurled him into the abyss, closed it, and sealed it over him, to keep him from leading the nations astray anymore, until the thousand years are at an end; after that he must be let loose a little while.

Then I saw thrones and those who were seated on them, and permission was granted them to pass judgment, even those who had been beheaded for bearing testimony to Jesus and for preaching the word of God, who refused to worship the wild beast and his statue, and would not let his mark be stamped upon their foreheads and upon their hands. They lived and reigned with Christ a thousand years.

The rest of the dead did not live again until the thousand years had ended. This is the first resurrection.

Blessed and holy is the man who shares in the first resurrection! Over such the second death will have no power, but they will be priests of God and Christ, and reign with Him the thousand years.

When the thousand years have ended, Satan will be let loose from his prison.