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.
Then they traveled through the desert, went around Edom and Moab's lands, and camped on the east side of Moab's land, past Arnon river. They didn't enter Moab's territory because Arnon marked Moab's border.