Numbers 21:12-14

Young's Literal Translation

¹² From thence they have journeyed, and encamp in the valley of Zared.

¹³ From thence they have journeyed, and encamp beyond Arnon, which [is] in the wilderness which is coming out of the border of the Amorite, for Arnon [is] the border of Moab, between Moab and the Amorite;

¹⁴ therefore it is said in a book, `The wars of Jehovah,' -- `Waheb in Suphah, And the brooks of Arnon;