Judges 11:18 in the World English Bible
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.
Context
17 Then Israel sent messengers unto the king of Edom, saying, Let me, I pray thee, pass through thy land: but the king of Edom would not hearken thereto. And in like manner they sent unto the king of Moab: but he would not consent: and Israel abode in Kadesh.
18 Then they went along through the wilderness, and compassed 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 came not within the border of Moab: for Arnon was the border of Moab.
19 And Israel sent messengers unto Sihon king of the Amorites, the king of Heshbon; and Israel said unto him, Let us pass, we pray thee, through thy land into my place.