Ezekiel 38:14-16

14Therefore, son of man, prophesy and say to Gog, Thus saith the Lord GOD; In that day when my people of Israel dwelleth safely, shalt thou not know it ? 15And thou shalt come from thy place out of the north parts, thou, and many people with thee, all of them riding upon horses, a great company, and a mighty army: 16And thou shalt come against my people of Israel, as a cloud to cover the land; it shall be in the latter days, and I will bring thee against my land, that the heathen may know me, when I shall be sanctified in thee, O Gog, before their eyes.