Numbers 21:15

12 From there they journeyed, and encamped in the valley of Zered.

13 From there they journeyed, and encamped on the other side of the Arnon, which is in the wilderness, that comes out of the border of the Amorites: for the Arnon is the border of Moab, between Moab and the Amorites.

14 Therefore it is said in the book of the Wars of Yahweh, Vaheb in Suphah, The valleys of the Arnon,

15 The slope of the valleys That inclines toward the dwelling of Ar, Leans on the border of Moab.

16 From there [they journeyed] to Beer: that is the well whereof Yahweh said to Moses, Gather the people together, and I will give them water.

17 Then sang Israel this song: Spring up, well; sing you to it:

18 The well, which the princes dug, Which the nobles of the people dug, With the scepter, [and] with their poles. From the wilderness [they journeyed] to Mattanah;