Genesis 36:8–9
8 So Esau settled in the hill country of Seir. (Esau is Edom.)
9 These are the generations of Esau the father of the Edomites in the hill country of Seir.
Deuteronomy 2:5
5 Do not contend with them, for I will not give you any of their land, no, not so much as for the sole of the foot to tread on, because iI have given Mount Seir to Esau as a possession.
Joshua 24:4
4 And dto Isaac I gave Jacob and Esau. And eI gave Esau the hill country of Seir to possess, but fJacob and his children went down to Egypt.