Numbers 21:32-35

32And Moses sent to spy out Jaazer, and they took the villages thereof, and drove out the Amorites that were there.

33And they turned and went up by the way of Bashan: and Og the king of Bashan went out against them, he, and all his people, to the battle at Edrei. 34And the Lord said unto Moses, Fear him not: for I have delivered him into thy hand, and all his people, and his land; and thou shalt do to him as thou didst unto Sihon king of the Amorites, which dwelt at Heshbon. 35So they smote him, and his sons, and all his people, until there was none left him alive: and they possessed his land.