Deuteronomy 4:46-48

46on this side the Jordan, in the valley opposite to Beth-Peor, in the land of Sihon the king of the Amorites, who dwelt in Heshbon, whom Moses and the children of Israel smote when they came out of Egypt;

47and they took possession of his land, and the land of Og the king of Bashan, two kings of the Amorites, who were on this side the Jordan, toward the sun-rising;

48from Aroer, which is on the bank of the river Arnon, as far as mount Sion, which is Hermon,