Deuteronomy 2:32

as the children of Esau who dwell in Seir, and the Moabites who dwell in Ar, did to me, until I pass over the Jordan into the land which the LORD our God gives us.”

But Sihon king of Heshbon would not let us pass by him, for the LORD your God hardened his spirit and made his heart obstinate, that he might deliver him into your hand, as it is today.

The LORD said to me, “Behold, I have begun to deliver up Sihon and his land before you. Begin to possess, that you may inherit his land.”

The LORD our God delivered him up before us; and we struck him, his sons, and all his people.

We took all his cities at that time, and utterly destroyed every inhabited city, with the women and the little ones. We left no one remaining.

Only the livestock we took for plunder for ourselves, with the plunder of the cities which we had taken.