Deuteronomy 3:8
Thus did we at that time take the land out of the hand of the two kings of the Amorites (which was over the Jordan), - from the ravine of Arnon as far as Mount Hermon.
Joshua 12:2-6
Sihon, king of the Amorites, who dwelt in Heshbon, - ruling from Aroer, which is on the edge of the ravine of Arnon, and the middle of the ravine, and half Gilead, even as far as the ravine Jabbok, the boundary of the sons of Ammon;
Joshua 13:9-12
from Aroer, which is on the edge of the ravine of Arnon, and the city, which is in the midst of the ravine, and all the table-land of Medeba, as far as Dibon;
Numbers 32:33-42
So then Moses gave unto them even unto the sons of Gad and unto the sons of Reuben and unto the half tribe of Manasseh son of Joseph the kingdom of sihon, king of the Amorites, and the kingdom of Og, the king of Bashan, the land by her cities with boundaries, even the cities of the land round about.