Numbers 21:11-13

American Standard Version

¹¹ And they journeyed from Oboth, and encamped at Iye-abarim, in the wilderness which is before Moab, toward the sunrising. ¹² From thence they journeyed, and encamped in the valley of Zered. ¹³ From thence they journeyed, and encamped on the other side of the Arnon, which is in the wilderness, that cometh out of the border of the Amorites: for the Arnon is the border of Moab, between Moab and the Amorites.