Deuteronomy 1:3-4

But forty years after the Israelites left Egypt, on the first day of the eleventh month, Moses addressed the people of Israel, telling them everything the LORD had commanded him to say. This took place after he had defeated King Sihon of the Amorites, who ruled in Heshbon, and at Edrei had defeated King Og of Bashan, who ruled in Ashtaroth.