Deuteronomy 3:10-13

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

11(For only Og the king of Bashan was left of the remnant of the Rephaim. Behold, his bed was a bed of iron. Is it not in Rabbah of the Ammonites? Nine cubits was its length, and four cubits its breadth, according to the common cubit.)

12"When we took possession of this land at that time, I gave to the Reubenites and the Gadites the territory beginning at Aroer, which is on the edge of the Valley of the Arnon, and half the hill country of Gilead with its cities.

13The rest of Gilead, and all Bashan, the kingdom of Og, that is, all the region of Argob, I gave to the half-tribe of Manasseh. (All that portion of Bashan is called the land of Rephaim.