Ezekiel 38:15-16

15You will come from your country far away in the north. You will bring many soldiers with you. All of them will be riding on horses. They will be a great army of many soldiers.

16Your army will be like a cloud that covers the land when you attack my people, the Israelites. In the days at the end of time I will bring you to attack my land. Yes, Gog, I will use you to show the nations that I am holy. Then they will know who I am.