Deuteronomy 3:10-13

10All the cities of the plain, and all Gilead, and all Bashan, to Salchah and Edrei, cities of the kingdom of Og in Bashan. 11For only Og king of Bashan remained of the remnant of giants; behold, his bedstead was a bedstead of iron; is it not in Rabbath of the children of Ammon? nine cubits was the length of it, and four cubits the breadth of it, after the cubit of a man.

12And this land, which we possessed at that time, from Aroer, which is by the river Arnon, and half mount Gilead, and its cities, I gave to the Reubenites and to the Gadites. 13And the rest of Gilead, and all Bashan, being the kingdom of Og, I gave to the half tribe of Manasseh; all the region of Argob, with all Bashan, which was called the land of giants.