Numbers 21:23-25

New Century Version

²³ But King Sihon would not let the Israelites pass through his country. He gathered his whole army together, and they marched out to meet Israel in the desert. At Jahaz they fought the Israelites. ²⁴ Israel killed the king and captured his land from the Arnon River to the Jabbok River. They took the land as far as the Ammonite border, which was strongly defended. ²⁵ Israel captured all the Amorite cities and lived in them, taking Heshbon and all the towns around it.