Deuteronomy 2:20-22

20(People also call this region the land of the Rephaites, who had once lived there. The Ammonites called them Zamzummites.

21There were many Zamzummites and they were as tall and strong as the Anakites. The Lord destroyed the Rephaites when the Ammonites moved in. Then the Ammonites lived there instead of the Rephaites.

22The Lord had done the same thing for Esau's descendants who lived in Seir. The Lord destroyed the Horites when Esau's descendants moved in and chased them out. Esau's descendants still live in their country today.