Deuteronomy 3:8

And we took the land at that time out of the hand of the two kings of the Amorites who were beyond the Jordan, from the valley of the Arnon to mount Hermon

Joshua 12:2-6

Sihon king of the Amorites, who dwelt in Heshbon, and ruled from Aroer, which is on the edge of the valley of the Arnon, and the middle of the valley, and half Gilead, even to the river Jabbok, the border of the sons of Ammon,

Joshua 13:9-12

from Aroer, that is on the edge of the valley of the Arnon, and the city that is in the middle of the valley, and all the plain of Medeba to Dibon;

Numbers 32:33-42

And Moses gave to them, even to the sons of Gad, and to the sons of Reuben, and to the half-tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites, and the kingdom of Og king of Bashan, the land, according t

Treasury of Scripture Knowledge

Summary

And we took at that time out of the hand of the two kings of the Amorites the land that was on this side Jordan, from the river of Arnon unto mount Hermon;

Bible References

The land

Numbers 32:33
And Moses gave to them, even to the sons of Gad, and to the sons of Reuben, and to the half-tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites, and the kingdom of Og king of Bashan, the land, according t
Joshua 12:2
Sihon king of the Amorites, who dwelt in Heshbon, and ruled from Aroer, which is on the edge of the valley of the Arnon, and the middle of the valley, and half Gilead, even to the river Jabbok, the border of the sons of Ammon,
Joshua 13:9
from Aroer, that is on the edge of the valley of the Arnon, and the city that is in the middle of the valley, and all the plain of Medeba to Dibon;