Deuteronomy 3:8-12

8“So we took the land at that time from the hand of the two kings [Sihon and Og] of the Amorites who were beyond the Jordan, from the valley of the Arnon to Mount Hermon

9(the Sidonians call Hermon Sirion, and the Amorites call it Senir):

10all the cities of the plain and all Gilead and all Bashan, as far as Salecah and Edrei, cities of the kingdom of Og in Bashan.”

11(For only Og king of Bashan was left of the remnant of the [giants known as the] Rephaim. Behold, his bed frame was a bed frame of iron; is it not in Rabbah of the Ammonites? It was nine cubits (12 ft.) long and four cubits (6 ft.) wide, using the cubit of a man [the forearm to the end of the middle finger].)

12“So we took possession of this land at that time. I gave the territory from Aroer, which is by the valley of the Arnon, along with half of the hill country of Gilead and its cities to the Reubenites and to the Gadites.