Numbers 21:13

From there they pulled up stakes and pitched on the other side of Arnon, in the wilderness that comes out of the borders of the Amorites; for Arnon is in the border of Moab, between Moab and the Amorites.

Numbers 22:36

And when Balak heard that Balaam had come, he went out to meet him, to a city of Moab, in the border of Arnon, which is in the outermost border.

Judges 11:18

And they went along 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 pitched on the other side of Arnon, but they did not come within the border of Moab; for Arnon was the border of Moab.

Numbers 21:14

Therefore it is said in the Book of the Wars of Jehovah, Waheb in Suphah, and in the torrents of Arnon,

Deuteronomy 2:24

Rise up, set out and cross over the river Arnon. Behold! I have given into your hand Sihon the Amorite, king of Heshbon, and his land. Begin to possess, and fight with him in battle.

Isaiah 16:2

For it shall be as a fleeing bird cast out of the nest, the daughters of Moab shall be at the fords of Arnon.

Jeremiah 48:20

Moab is put to shame, for it is broken down. Howl and cry! Tell it in Arnon that Moab is stripped.

Treasury of Scripture Knowledge

Summary

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

Bible References

General references

Numbers 21:14
Therefore it is said in the Book of the Wars of Jehovah, Waheb in Suphah, and in the torrents of Arnon,
Numbers 22:36
And when Balak heard that Balaam had come, he went out to meet him, to a city of Moab, in the border of Arnon, which is in the outermost border.
Deuteronomy 2:24
Rise up, set out and cross over the river Arnon. Behold! I have given into your hand Sihon the Amorite, king of Heshbon, and his land. Begin to possess, and fight with him in battle.
Judges 11:18
And they went along 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 pitched on the other side of Arnon, but they did not come within the border of Moab; for Arnon was the border of Moab.
Isaiah 16:2
For it shall be as a fleeing bird cast out of the nest, the daughters of Moab shall be at the fords of Arnon.
Jeremiah 48:20
Moab is put to shame, for it is broken down. Howl and cry! Tell it in Arnon that Moab is stripped.