Deuteronomy 2:20-22

20(It is also counted as a land of Rephaim. Rephaim formerly lived there—but the Ammonites call them Zamzummim—

21a people great and many, and tall as the Anakim; but the Lord destroyed them before the Ammonites, and they dispossessed them and settled in their place,

22as he did for the people of Esau, who live in Seir, when he destroyed the Horites before them and they dispossessed them and settled in their place even to this day.