Deuteronomy 3:8-17

⁸ At that time we took their land from the two kings of the Amorites on the far side of Jordan, from the valley of the Arnon to Mount Hermon; ⁹ (By the Sidonians, Hermon is named Sirion, and by the Amorites Shenir;) ¹⁰ All the towns of the table-land and all Gilead and Bashan as far as Salecah and Edrei, towns of the kingdom of Og in Bashan. ¹¹ (For Og, king of Bashan, was the last of all the Rephaim; his bed was made of iron; is it not in Rabbah, in the land of the children of Ammon? It was nine cubits long and four cubits wide, measured by the common cubit.)

Reuben, Gad, and Half of Manasseh Settle East of the Jordan

¹² And this land which we took at that time, from Aroer by the valley of the Arnon, and half the hill-country of Gilead with its towns, I gave to the Reubenites and the Gadites. ¹³ The rest of Gilead and all Bashan, the kingdom of Og, all the land of Argob, together with Bashan, I gave to the half-tribe of Manasseh. (This land is named the land of the Rephaim. ¹⁴ Jair, the son of Manasseh, took all the land of Argob, as far as the country of the Geshurites and the Maacathites, naming it, Bashan, Havvoth-Jair after himself, as it is to this day.) ¹⁵ And Gilead I gave to Machir. ¹⁶ And the land from Gilead to the valley of the Arnon, with the middle of the valley as a limit, as far as the river Jabbok which is the limit of the country of the children of Ammon, I gave to the Reubenites and the Gadites; ¹⁷ As well as the Arabah, with the river Jordan as their limit, from Chinnereth to the Salt Sea, under the slopes of Pisgah to the east.