Arnon

From there they traveled, 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 the LORD, “Vaheb in Suphah, the valleys of the Arnon,

Israel struck him with the edge of the sword, and possessed his land from the Arnon to the Jabbok, even to 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, who had fought against the former king of Moab, and taken all his land out of his hand, even to the Arnon.

for a fire has gone out of Heshbon, a flame from the city of Sihon. It has devoured Ar of Moab, The lords of the high places of the Arnon.

When Balak heard that Balaam had come, he went out to meet him to the City of Moab, which is on the border of the Arnon, which is in the utmost part of the border.

The king of the children of Ammon answered to the messengers of Jephthah, “Because Israel took away my land, when he came up out of Egypt, from the Arnon even to the Jabbok, and to the Jordan: now therefore restore that territory again peaceably.”

Then they went through the wilderness, and went around the land of Edom, and the land of Moab, and came by the east side of the land of Moab, and they encamped on the other side of the Arnon; but they didn’t come within the border of Moab, for the Arnon was the border of Moab.

They possessed all the border of the Amorites, from the Arnon even to the Jabbok, and from the wilderness even to the Jordan.

While Israel lived in Heshbon and its towns, and in Aroer and its towns, and in all the cities that are along by the side of the Arnon, three hundred years; why didn’t you recover them within that time?

For it will be that as wandering birds, as a scattered nest, so will the daughters of Moab be at the fords of the Arnon.

Moab is disappointed; for it is broken down: wail and cry; tell it by the Arnon, that Moab is laid waste.