Deuteronomy 2:8-12

And when we passed by from our brethren the children of Esau, which dwelt in Seir, through the way of the plain from Elath, and from Ezion-gaber, we turned and passed by the way of the wilderness of Moab.

And the LORD said unto me, Distress not the Moabites, neither contend with them in battle: for I will not give thee of their land for a possession; because I have given Ar unto the children of Lot for a possession.

The Emims dwelt therein in times past, a people great, and many, and tall, as the Anakims;

Which also were accounted giants, as the Anakims; but the Moabites call them Emims.

The Horims also dwelt in Seir beforetime; but the children of Esau succeeded them, when they had destroyed them from before them, and dwelt in their stead; as Israel did unto the land of his possession, which the LORD gave unto them.