From thence they removed, and encamped on the other side of the Arnon, which is in the wilderness that comes out of the border of the Amorites. For the Arnon is the border of Moab, between Moab and the Amorites.

Therefore it is said in the book of the wars of Jehovah, Vaheb in Suphah, and the brooks of Arnon;

And Israel smote him with the edge of the sword, and took possession of his land from the Arnon to the Jabbok, even unto the children of Ammon; for the border of the children of Ammon was strong.

For Heshbon was the city of Sihon the king of the Amorites; and he had fought against the former king of Moab, and had taken all his land out of his hand, even unto the Arnon.

For there went forth fire from Heshbon, a flame from the city of Sihon; It consumed Ar of Moab, the lords of the high places of the Arnon.

And when Balak heard that Balaam came, he went out to meet him, to the city of Moab, which is on the border of the Arnon, which is at the extremity of the border.