Numbers 21:13-15

13From there they set out and camped on the other side of the Arnon, which is in the wilderness that extends from the border of the Amorites, for the aArnon is the border of Moab, between Moab and the Amorites. 14Therefore it is said in the Book of the Wars of the Lord,

Waheb in Suphah, and the valleys of the Arnon,
15and the slope of the valleys
that extends to the seat of bAr,
and leans to the border of Moab.”

Deuteronomy 2:36

36 cFrom Aroer, which is on the edge of the Valley of the Arnon, and from dthe city that is in the valley, as far as Gilead, there was not a city too high for us. eThe Lord our God gave all into our hands.

Judges 11:18-21

18“Then they journeyed through the wilderness and fwent around the land of Edom and the land of Moab and garrived on the east side of the land of Moab and hcamped on the other side of the Arnon. But they did not enter the territory of Moab, for the Arnon was the boundary of Moab. 19 iIsrael then sent messengers to Sihon king of the Amorites, king of Heshbon, and Israel said to him, ‘Please let us pass through your land to our country,’ 20but Sihon did not trust Israel to pass through his territory, so Sihon gathered all his people together and encamped at Jahaz and fought with Israel. 21And the Lord, the God of Israel, gave Sihon and all his people into the hand of Israel, and they defeated them. So Israel took possession of all the land of the Amorites, who inhabited that country.
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