Judges 11:18

Then they went along the wilderness,.... The wilderness of Paran, which lay along the borders of Edom; they went, according to Jarchi, from the west to the east on the south border of Edom and Moab:

and compassed the land of Edom, and the land of Moab; all the south of the land of Edom, and all the south of the land of Moab; towards the sunrising, as in Numbers 21:11

and pitched on the other side of Arnon; the river Arnon, which, according to Jarchi, was at the east end of the land of Moab, where began the country of Sihon and Og:

but came not within the border of Moab; so far were they from attempting to take away any part of that land from the king of it, though ill treated by him:

for Arnon was the border of Moab; which divided between Moab and the Amorites, Numbers 21:13.