Deuteronomy 2:30-37

30But King Sihon of Heshbon was unwilling to allow us to pass near him because the Lord our God had made him obstinate and stubborn so that he might deliver him over to you this very day.

31The Lord said to me, “Look! I have already begun to give over Sihon and his land to you. Start right now to take his land as your possession.”

32When Sihon and all his troops emerged to encounter us in battle at Jahaz,

33the Lord our God delivered him over to us and we struck him down, along with his sons and everyone else.

34At that time we seized all his cities and put every one of them under divine judgment, including even the women and children; we left no survivors.

35We kept only the livestock and plunder from the cities for ourselves.

36From Aroer, which is at the edge of Wadi Arnon (it is the city in the wadi), all the way to Gilead there was not a town able to resist us – the Lord our God gave them all to us.

37However, you did not approach the land of the Ammonites, the Wadi Jabbok, the cities of the hill country, or any place else forbidden by the Lord our God.