Ezekiel 38:14-16

14“Therefore, son of man, prophesy and say to Gog, ‘Thus says the Lord God, “On that day when My people Israel live securely, will you not become aware of it [and become active]?

15You will come from your place in the remote parts of the north, you and many nations with you, all of them riding horses, a great horde, and a mighty army;

16and you will go up against My people Israel like a cloud to cover the land. In the last days it will come about that I will bring you against My land, so that the nations may know Me when I show Myself holy through you before their eyes, O Gog.”