Ezekiel 38:14-16

14Therefore prophesy, son of man, and say unto Gog, Thus saith the Lord Jehovah: In that day when my people Israel dwelleth in safety, shalt thou not know [it]?

15And thou shalt come from thy place out of the uttermost north, thou and many peoples with thee, all of them riding upon horses, a great assemblage and a mighty army.

16And thou shalt come up against my people Israel as a cloud to cover the land — it shall be at the end of days — and I will bring thee against my land, that the nations may know me, when I shall be hallowed in thee, O Gog, before their eyes.