Deuteronomy 3:12

“So we took possession of this land at that time. I gave the territory from Aroer, which is by the valley of the Arnon, along with half of the hill country of Gilead and its cities to the Reubenites and to the Gadites.

Deuteronomy 2:36

From Aroer, which is on the edge of the Arnon Valley, and from the city which is in the valley, as far as Gilead, there was no city [whose wall was] too high and too strong for us; the Lord our God handed over everything to us.

Numbers 32:32-38

We will cross over armed before the Lord into the land of Canaan, so that the possession of our inheritance on [the east] side of the Jordan may be ours.”

Deuteronomy 4:48

from Aroer, which is on the edge of the valley of the [river] Arnon, as far as Mount Sion (that is, Hermon),

Joshua 12:2-6

Sihon king of the Amorites, who lived in Heshbon, and ruled from Aroer, which is on the edge of the valley of the [river] Arnon, both the middle of the valley and half of Gilead, and as far as the brook Jabbok, [which is] the border of the sons of Ammon;

Joshua 13:8-28

With the other half-tribe [of Manasseh], the Reubenites and the Gadites received their inheritance which Moses gave them beyond the Jordan eastward, just as Moses the servant of the Lord gave to them;

2 Kings 10:33

from the Jordan eastward, all the land of Gilead, the Gadites and the Reubenites and the Manassites, from Aroer, which is by the Arnon River, even Gilead and Bashan.

Treasury of Scripture Knowledge

Summary

And this land, which we possessed at that time, from Aroer, which is by the river Arnon, and half mount Gilead, and the cities thereof, gave I unto the Reubenites and to the Gadites.

Bible References

From aroer

Deuteronomy 2:36
From Aroer, which is on the edge of the Arnon Valley, and from the city which is in the valley, as far as Gilead, there was no city [whose wall was] too high and too strong for us; the Lord our God handed over everything to us.
Deuteronomy 4:48
from Aroer, which is on the edge of the valley of the [river] Arnon, as far as Mount Sion (that is, Hermon),
Numbers 32:33
So Moses gave to them, 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, the king of the Amorites and the kingdom of Og, the king of Bashan, the land with its cities and territories, the cities of the surrounding land.
Joshua 12:2
Sihon king of the Amorites, who lived in Heshbon, and ruled from Aroer, which is on the edge of the valley of the [river] Arnon, both the middle of the valley and half of Gilead, and as far as the brook Jabbok, [which is] the border of the sons of Ammon;
Joshua 13:8
With the other half-tribe [of Manasseh], the Reubenites and the Gadites received their inheritance which Moses gave them beyond the Jordan eastward, just as Moses the servant of the Lord gave to them;
2 Kings 10:33
from the Jordan eastward, all the land of Gilead, the Gadites and the Reubenites and the Manassites, from Aroer, which is by the Arnon River, even Gilead and Bashan.

General references

Numbers 34:14
for the tribe of the sons of Reuben and the tribe of the sons of Gad have received their inheritance by their fathers’ households, and the half-tribe of Manasseh have received their possession.
Deuteronomy 29:8
and we took their land and gave it as an inheritance to the tribe of Reuben, the tribe of Gad, and the half-tribe of Manasseh.
Joshua 13:16
Their territory was from Aroer, which is on the edge of the valley of the [river] Arnon, and the city which is in the middle of the valley and all the plain by Medeba;
Psalm 136:21

And gave their land as a heritage,
For His lovingkindness endures forever;