Deuteronomy 4:44-49

This is the law which Moses put before the children of Israel: These are the rules and the laws and the decisions which Moses gave to the children of Israel after they came out of Egypt; On the far side of Jordan, in the valley facing Beth-peor, in the land of Sihon, king of the Amorites, who was ruling in Heshbon, whom Moses and the children of Israel overcame after they had come out of Egypt: And they took his land for a heritage, and the land of Og, king of Bashan, the two kings of the Amorites, whose lands were on the other side of Jordan to the east; From Aroer on the edge of the valley of the Arnon as far as Mount Sion, which is Hermon, And all the Arabah on the far side of Jordan to the east, as far as the sea of the Arabah under the slopes of Pisgah.