Numbers 21:13-15

Complete Jewish Bible

¹³ From there they traveled and camped on the other side of the Arnon, in the desert; this river comes out of the territory of the Emori; for the Arnon is the boundary between Mo’av and the Emori. ¹⁴ This is why it says, in the Book of the Wars of Adonai, “. . . Vahev at Sufah, the vadis of Arnon, ¹⁵ and the slope of the vadis extending as far as the site of ‘Ar, which lie next to the territory of Mo’av.”