Revelation 20:9

on the breadth of the earth--so as completely to overspread it. Perhaps we ought to translate, ". . . of the [holy] land." the camp of the saints and the beloved city--the camp of the saints encircling the beloved city, Jerusalem (Ecclesiasticus 24:11). Contrast "hateful" in Babylon (Rev 18:2; Deu 32:15, Septuagint). Ezekiel's prophecy of Gog and Magog (Eze. 38:1-39:29) refers to the attack made by Antichrist on Israel before the millennium: but this attack is made after the millennium, so that "Gog and Magog" are mystical names representing the final adversaries led by Satan in person. Ezekiel's Gog and Magog come from the north, but those here come "from the four corners of the earth." Gog is by some connected with a Hebrew root, "covered." from God--so B, Vulgate, Syriac, Coptic, and ANDREAS. But A omits the words. Even during the millennium there is a separation between heaven and earth, transfigured humanity and humanity in the flesh. Hence it is possible that an apostasy should take place at its close. In the judgment on this apostasy the world of nature is destroyed and renewed, as the world of history was before the millennial kingdom; it is only then that the new heaven and new earth are realized in final perfection.

— Jamieson-Fausset-Brown Commentary (public domain)