Numbers 21:15

15 and the slope of the valleys that extend to the town of Ar and toward the border of Moab."

Numbers 21:15 Meaning and Commentary

Numbers 21:15

And at the stream of the brooks that goeth down to the
dwelling of Ar
All that part of the country which lay upon the stream, as far as the city of Ar, the metropolis of Moab, called Ar of Moab, ( Isaiah 15:1 ) ,

and lieth upon the border of Moab;
as that city did; so far goes the quotation out of the aforesaid book, as a proof of what was taken by the Amorites from the Moabites, and were not in their possession when Israel were upon their borders; and therefore, in taking them from the Amorites, did no wrong to Moab.

Numbers 21:15 In-Context

13 From there they moved again and camped on the north side of the Arnon River, in the wilderness which extends into Amorite territory. (The Arnon was the border between the Moabites and the Amorites.)
14 That is why [The Book of the Lord's Battles ]speaks of ". . . the town of Waheb in the area of Suphah, and the valleys; the Arnon River,
15 and the slope of the valleys that extend to the town of Ar and toward the border of Moab."
16 From there they went on to a place called Wells, where the Lord said to Moses, "Bring the people together, and I will give them water."
17 At that time the people of Israel sang this song: "Wells, produce your water; And we will greet it with a song -
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.