Deuteronomy 3:12
And 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.And 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.