Numbers 21:32-35

32And Moses sent to spy out Jaazer, and they took its dependent villages, and he dispossessed the Amorites that were there. 33And they turned and went up by the way to Bashan; and Og the king of Bashan went out against them, he and all his people, for battle to Edrei. 34And Jehovah said to Moses, Fear him not! for into thy hand have I given him, and all his people, and his land; and thou shalt do to him as thou didst unto Sihon the king of the Amorites, who dwelt at Heshbon. 35And they smote him, and his sons, and all his people, so that they left him none remaining, and took possession of his land.