Ezekiel 38:23

They shall know. As Gog was to be utterly discomfited and men were to acknowledge the superiority of the God of heaven, so, as the controversy nears its climax, the carefully laid schemes of the great deceiver will be totally unmasked, and Satan will be unveiled in the weakness and falsity of his claims. Demons and men will be led to acknowledge that there is but One who is supreme, and that all His dealings in the great controversy have been conducted with respect to the eternal good of His people and the universe at large (see GC 671).

For further comment on this frequently recurring refrain of the book of Ezekiel see on ch. 6:7. It occurs twice here ch. (38:16, 23) and four times in ch. 39 (vs. 6, 7, 22, 28).