Joshua 24:4

24:4 and to Isaac I gave Jacob and Esau. To Esau I assigned Mount Seir, while Jacob and his sons went down to Egypt.

Joshua 11:17

11:17 from Mount Halak on up to Seir, as far as Baal Gad in the Lebanon Valley below Mount Hermon. He captured all their kings and executed them.

Joshua 15:10

15:10 It then turned from Baalah westward to Mount Seir, crossed to the slope of Mount Jearim on the north (that is Kesalon), descended to Beth Shemesh, and crossed to Timnah.