Numbers 21:33-35

33After that, the Israelites travelled towards Bashan. Og, the king of Bashan, marched out with his army to fight against them at Edrei.

34The Lord said to Moses, ‘Do not be afraid of Og. I will put him under your power, as well as his army and his land. Attack him in the same way that you attacked Sihon, the king of the Amorites who ruled in Heshbon.’

35So they killed Og and his sons and all his army. Nobody was left alive. Their land became the Israelites' land.