Bamidbar 21:15

15 And at the stream of the brooks that goeth down to the site of Ar, and lieth upon the border of Moav.

Bamidbar 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.

Bamidbar 21:15 In-Context

13 From thence they removed, and encamped on the other side of Arnon, which is in the midbar encroaching the Emori; for Arnon is the border of Moav, between Moav and the Emori.

14 Wherefore it is said in the Sefer Michamot Hashem, Vahev v’sufah and in the Vadis Arnon,

15 And at the stream of the brooks that goeth down to the site of Ar, and lieth upon the border of Moav.

16 And from thence they went to Beer; that is the Well whereof Hashem spoke unto Moshe, Gather the people together, and I will give them mayim.

17 Then Yisroel sang this shirah (song), Spring up, O well; sing ye unto it.