Revelation 20:9 - Matthew Poole's English Annotations on the Holy Bible

And they went up on the breadth of the earth; that is, in all parts of it where the church of Christ was. And compassed the camp of the saints about, and the beloved city; the church of God (typified by old Jerusalem, which was God's beloved city) they encompassed in a military order and manner, designing to destroy it, or make it subject to their lusts. And fire came down from God out of heaven, and devoured them: thus Ezekiel prophesied of the issue of the Gog and Magog by him mentioned, Ezekiel 38:18-22: Ezekiel 38:22, And I will plead against him with pestilence and with blood; and I will rain upon him, and upon his bands, and upon the many people that are with him, an overflowing rain, and great hailstones, fire, and brimstone. The meaning is, that God would destroy them with a quick and terrible destruction, such as is that destruction of persons and places which is by fire.