Numbers 21:10-13

¹⁰And the children of Israel departed, and encamped in Oboth.

¹¹And having departed from Oboth, they encamped in Achalgai, on the farther side in the wilderness, which is opposite Moab, towards the east.

¹²And thence they departed, and encamped in the valley of Zared.

¹³And they departed thence and encamped on the other side of Arnon in the wilderness, the country which extends from the coasts of the Amorites; for Arnon is the borders of Moab, between Moab and the Amorites.