7 And when the thousand years are ended, Satan will be loosed from his prison 8 and will come out to deceive the nations which are at the four corners of the earth, that is, Gog and Magog, to gather them for battle; their number is like the sand of the sea. 9 And they marched up over the broad earth and surrounded the camp of the saints and the beloved city; but fire came down from heaven and consumed them,
Matthew Henry's Commentary on Revelation 20:7-9
Commentary on Revelation 20:7-10
(Read Revelation 20:7-10)
While this world lasts, Satan's power in it will not be wholly destroyed, though it may be limited and lessened. No sooner is Satan let loose, than he again begins deceiving the nations, and stirring them up to make war with the saints and servants of God. It would be well if the servants and ministers of Christ were as active and persevering in doing good, as his enemies in doing mischief. God will fight this last and decisive battle for his people, that the victory may be complete, and the glory be to himself.