Deuteronomy 2:20-22

20(That also is reckoned a land of giants: giants dwelt therein in time past, and the Ammonites call them Zamzummim;

21a people great, and many, and tall as the Anakim; and Jehovah destroyed them before them, and they dispossessed them, and dwelt in their stead;

22as he did to the children of Esau, who dwelt in Seir, from before whom he destroyed the Horites; and they dispossessed them, and dwelt in their stead, even to this day.