Joshua 13:8-10

8With him the Reubenites and the Gadites received their inheritance, which Moses gave them, beyond the Jordan eastward, even as Moses the servant of Jehovah gave them: 9from Aroer, that is on the edge of the valley of the Arnon, and the city that is in the middle of the valley, and all the plain of Medeba unto Dibon; 10and all the cities of Sihon king of the Amorites, who reigned in Heshbon, unto the border of the children of Ammon;