Deuteronomy 2:20-22

Amplified Bible

²⁰ (It is also regarded as the land of the Rephaim [of giant stature], for Rephaim used to live there, but the Ammonites call them Zamzummin, ²¹ a great, numerous people, and tall as the Anakim, but the Lord destroyed them before the sons of Ammon. And they dispossessed them and settled in their place, ²² just as He did for the sons of Esau, who live in Seir, when He destroyed the Horites from before them; and the sons of Esau (the Edomites) dispossessed them and settled in their place [and remain there] even to this day.