Deuteronomy 4:46-48

46beyond Jordan, in the valley over against Beth-peor, in the land of Sihon king of the Amorites, who dwelt at Heshbon, whom Moses and the children of Israel smote, when they came forth out of Egypt:

47and they took his land in possession, and the land of Og king of Bashan, the two kings of the Amorites, which were beyond Jordan toward the sunrising;

48from Aroer, which is on the edge of the valley of Arnon, even unto mount Sion (the same is Hermon),