Deuteronomy 3:2, 3

The LORD said to me, “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.”

So the LORD our God also gave into our hands Og king of Bashan and all his army. We struck them down, leaving no survivors.