while they were in the valley across the Jordan facing Beth-peor in the land of Sihon king of the Amorites, who lived in Heshbon and was defeated by Moses and the Israelites after they had come out of Egypt.
He proclaimed them in the valley across the Jordan near Beth-peor, in the land taken from Sihon king of the Amorites.
It locates the law in a specific conquered setting.
44This is the law that Moses set before the Israelites. 45These are the testimonies, statutes, and ordinances that Moses proclaimed to them after they had come out of Egypt, 46while they were in the valley across the Jordan facing Beth-peor in the land of Sihon king of the Amorites, who lived in Heshbon and was defeated by Moses and the Israelites after they had come out of Egypt. 47They took possession of the land belonging to Sihon and to Og king of Bashan — the two Amorite kings across the Jordan to the east — 48extending from Aroer on the rim of the Arnon Valley as far as Mount Siyon (that is, Hermon), 49including all the Arabah on the east side of the Jordan and as far as the Sea of the Arabah, below the slopes of Pisgah.