Deuteronomy 3:8-12

8And we took at that time the land out of the hand of the two kings of the Amorites, that were on this side the Jordan, from the river Arnon to mount Hermon

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

10all the cities of the plateau, and all Gilead, and all Bashan, as far as Salchah and Edrei, the cities of the kingdom of Og in Bashan.

11For only Og the king of Bashan remained of the residue of giants: behold, his bedstead was a bedstead of iron; is it not in Rabbah of the children of Ammon? its length was nine cubits, and its breadth four cubits, after the cubit of a man.

12And this land we took in possession at that time. From Aroer, which is by the river Arnon, and the half of mount Gilead, and its cities, I gave to the Reubenites and to the Gadites;