Numbers 21:13

21:13 From there they moved on and camped on the other side of the Arnon, in the wilderness that extends from the regions of the Amorites, for Arnon is the border of Moab, between Moab and the Amorites.

Numbers 21:23-24

21:23 But Sihon did not permit Israel to pass through his border; he gathered all his forces together and went out against Israel into the wilderness. When he came to Jahaz, he fought against Israel. 21:24 But the Israelites defeated him in battle and took possession of his land from the Arnon to the Jabbok, as far as the Ammonites, for the border of the Ammonites was strongly defended.

Numbers 22:36

Balaam Meets Balak

22:36 When Balak heard that Balaam was coming, he went out to meet him at a city of Moab which was on the border of the Arnon at the boundary of his territory.

Numbers 34:4

34:4 and then the border will turn from the south to the Scorpion Ascent, continue to Zin, and then its direction will be from the south to Kadesh Barnea. Then it will go to Hazar Addar and pass over to Azmon.

Numbers 34:12

34:12 Then the border will continue down the Jordan River and its direction will be to the Salt Sea. This will be your land by its borders that surround it.’”