Numbers 21:12-16

12From there they moved and camped in the Valley of Zered.

13From there they moved and camped on the other side of the Arnon, which is in the wilderness that extends from the border of the Amorites; for the Arnon is the border of Moab, between Moab and the Amorites.

14Therefore it is said in the Book of the Wars of the Lord: “Waheb in Suphah, The brooks of the Arnon,

15And the slope of the brooks That reaches to the dwelling of Ar, And lies on the border of Moab.”

16From there they went to Beer, which is the well where the Lord said to Moses, “Gather the people together, and I will give them water.”