Numbers 21:31-35

31So Israel settled in the land of the Amorites. 32After Moses had sent spies to Jazer, the Israelites captured its surrounding settlements and drove out the Amorites who were there.

33Then they turned and went up along the road toward Bashan, and Og king of Bashan and his whole army marched out to meet them in battle at Edrei.

34The LORD said to Moses, “Do not be afraid of him, for I have delivered him into your hands, along with his whole army and his land. Do to him what you did to Sihon king of the Amorites, who reigned in Heshbon.” 35So they struck him down, together with his sons and his whole army, leaving them no survivors. And they took possession of his land.