Bamidbar 21:13

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.

Bamidbar 21:13 Meaning and Commentary

Numbers 21:13

From thence they removed, and pitched on the other side of
Arnon
A river on the borders of Moab:

which is in the wilderness that cometh out of the coasts of the
Amorites;
according to Jarchi, they went round the land of Moab, all to the south and east, and came not into the border of Moab, as Jephthah said, ( Judges 11:18 ) but before they came hither they had a station at Almondiblathaim, ( Numbers 33:46 Numbers 33:47 )

for Arnon is the border of Moab, between Moab and the Amorites;
a river which divided these two countries, and bounded them; and Moses is the more particular in this account, to show that the Israelites took nothing from the Moabites, but what the Amorites had taken from them, they being charged not to distress the Moabites and Ammonites, ( Deuteronomy 2:9 Deuteronomy 2:19 ) , see Jephthah's defence, ( Judges 11:15-27 ) .

Bamidbar 21:13 In-Context

11 And they journeyed from Ovot, and encamped at Iyei-HaAvarim, in the midbar which is before Moav, toward the mizrach hashemesh.

12 From thence they removed, and encamped in the Wadi Zered.

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.