Deuteronomy 3:2–3

2 And the Lord said unto me, Fear him not: for I will deliver him, and all his people, and his land, into thy hand; and thou shalt do unto him as thou didst unto cSihon king of the Amorites, which dwelt at Heshbon. 3 So the Lord our God delivered into our hands Og also, the king of Bashan, and all his people: dand we smote him until none was left to him remaining.