Deuteronomy 3:8-12

8So at that time we took from these two kings of the Amorites the territory east of the Jordan, from the Arnon Gorge as far as Mount Hermon.

9(Hermon is called Sirion by the Sidonians; the Amorites call it Senir.)

10We took all the towns on the plateau, and all Gilead, and all Bashan as far as Salekah and Edrei, towns of Og’s kingdom in Bashan.

11(Og king of Bashan was the last of the Rephaites. His bed was decorated with iron and was more than nine cubits long and four cubits wide. It is still in Rabbah of the Ammonites.)

12Of the land that we took over at that time, I gave the Reubenites and the Gadites the territory north of Aroer by the Arnon Gorge, including half the hill country of Gilead, together with its towns.