From there they moved on and camped on the other side of the Arnon, in the wilderness that extends into the Amorite territory. Now the Arnon is the border between the Moabites and the Amorites.

Numbers 21:14
Therefore it is stated in the Book of the Wars of the LORD: "Waheb in Suphah and the wadis of the Arnon,

Numbers 22:36
When Balak heard that Balaam was coming, he went out to meet him at the Moabite city on the Arnon border, at the edge of his territory.

Deuteronomy 2:24
"Arise, set out, and cross the Arnon Valley. See, I have delivered into your hand Sihon the Amorite, king of Heshbon, and his land. Begin to take possession of it and engage him in battle.

Judges 11:18
Then Israel traveled through the wilderness and bypassed the lands of Edom and Moab. They came to the east side of the land of Moab and camped on the other side of the Arnon. But they did not enter the territory of Moab, since the Arnon was its border.

Isaiah 16:2
Like fluttering birds pushed out of the nest, so are the daughters of Moab at the fords of the Arnon:

Jeremiah 48:20
Moab is put to shame, for it has been shattered. Wail and cry out! Declare by the Arnon that Moab is destroyed.

From there they removed, and pitched on the other side of Arnon, which is in the wilderness that comes out of the coasts of the Amorites: for Arnon is the border of Moab, between Moab and the Amorites.