7 And when the thousand years may be finished, the Adversary shall be loosed out of his prison, 8 and he shall go forth to lead the nations astray, that are in the four corners of the earth—Gog and Magog—to gather them together to war, of whom the number 'is' as the sand of the sea; 9 and they did go up over the breadth of the land, and did surround the camp of the saints, and the beloved city, and there came down fire from God out of the heaven, and devoured 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.