Joshua 12:1-2

1Now these are the kings of the land, whom the children of Israel smote, and possessed their land on the other side of Jordan toward the rising of the sun, from the river Arnon to mount Hermon, and all the plain on the east:

2Sihon king of the Amorites, who dwelt in Heshbon, and ruled from Aroer, which is upon the bank of the river Arnon, and from the middle of the river, and half Gilead, even to the river Jabbok, which is the border of the children of Ammon;