And when the former thousand years are fulfilled, Satan shall be loosed out of his prison — At the same time that the first resurrection begins. There is a great resemblance between this passage and Revelation 12:12. At the casting out of the dragon, there was joy in heaven, but there was woe upon earth: so at the loosing of Satan, the saints begin to reign with Christ; but the nations on earth are deceived.
Related Commentaries of Revelation 20:7
Revelation 20:7
7 And when the thousand years are expired, Satan shall be loosed out of his prison,