Deuteronomy 2:4-9

and command the people, saying, “You are passing through the territory of your brothers the sons of Esau (the Edomites), who live in Seir; and they will be afraid of you. So be very careful; do not provoke them, for I will not give you any of their land, not even as little as a footstep, because I have given Mount Seir to Esau as a possession. You shall buy food from them with money so that you may [have something to] eat, and you shall also buy water from them with money so that you may [have something to] drink. For the LORD your God has blessed you in all that you have done; He has known about your wanderings through this great wilderness. These forty years the LORD your God has been with you; you have lacked nothing.” ’ “So we passed beyond our brothers the sons of Esau, who lived in Seir, away from the Arabah (wilderness) road, away from Elath and from Ezion-geber. Then we turned and passed through by the way of the Wilderness of Moab. And the LORD said to me, ‘Do not harass [the descendants of] Moab, nor provoke them to war, for I will not give you any of their land as a possession, because I have given Ar to the sons (Moab and Ammon) of Lot as a possession.’ [Gen 19:30-38]