Deuteronomy 2:4-8

4 And command you the people, saying, You are to pass through the coast of your brothers the children of Esau, which dwell in Seir; and they shall be afraid of you: take you good heed to yourselves therefore:

5 Meddle not with them; for I will not give you of their land, no, not so much as a foot breadth; because I have given mount Seir to Esau for a possession.

6 You shall buy meat of them for money, that you may eat; and you shall also buy water of them for money, that you may drink.

7 For the LORD your God has blessed you in all the works of your hand: he knows your walking through this great wilderness: these forty years the LORD your God has been with you; you have lacked nothing.

8 And when we passed by from our brothers the children of Esau, which dwelled in Seir, through the way of the plain from Elath, and from Eziongaber, we turned and passed by the way of the wilderness of Moab.