Ezekiel 38:3

And say, Thus saith the Lord GOD; Behold, I am against thee, O Gog, the chief prince of Meshech and Tubal:

Ezekiel 38:3 opens the address to Gog as the one commanded to make himself ready with all his assembled host to serve as a guard. That readiness looks forward to coming in the latter years against a land recovered from war and populated by a people gathered out of many nations. The destination of that advance is the mountains of Israel, where those regathered inhabitants are dwelling in safety. The gathering work portrayed in that prophecy is now in progress in foreign countries. It is moving forward at the present time in a remarkable manner.