Deuteronomy 3:12

And this land we took in possession at that time. From Aroer, which is by the river Arnon, and the half of mount Gilead, and its cities, I gave to the Reubenites and to the Gadites;

Deuteronomy 2:36

From Aroer, which is on the bank of the river Arnon, and the city that is in the ravine even to Gilead, there was not one city too strong for us: Jehovah our God delivered all before us.

Numbers 32:32-38

We will pass over armed before Jehovah into the land of Canaan, and the possession of our inheritance on this side the Jordan shall be ours.

Deuteronomy 4:48

from Aroer, which is on the bank of the river Arnon, as far as mount Sion, which is Hermon,

Joshua 12:2-6

Sihon the king of the Amorites, who dwelt at Heshbon, and ruled from Aroer, which is upon the bank of the river Arnon, and from the middle of the ravine, and over half Gilead, as far as the river Jabbok, which is the border of the children of Ammon;

Joshua 13:8-28

with him the Reubenites and the Gadites have received their inheritance, which Moses gave them, beyond the Jordan eastward, as Moses the servant of Jehovah gave 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 river Arnon, both 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 bank of the river Arnon, and the city that is in the ravine even to Gilead, there was not one city too strong for us: Jehovah our God delivered all before us.
Deuteronomy 4:48
from Aroer, which is on the bank of the river Arnon, as far as mount Sion, which is Hermon,
Numbers 32:33
And Moses gave to them, to the children of Gad, and to the children of Reuben, and to half the tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites, and the kingdom of Og the king of Bashan, the land, according to its cities and territories, the cities of the land round about.
Joshua 12:2
Sihon the king of the Amorites, who dwelt at Heshbon, and ruled from Aroer, which is upon the bank of the river Arnon, and from the middle of the ravine, and over half Gilead, as far as the river Jabbok, which is the border of the children of Ammon;
Joshua 13:8
with him the Reubenites and the Gadites have received their inheritance, which Moses gave them, beyond the Jordan eastward, as Moses the servant of Jehovah gave 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 river Arnon, both Gilead and Bashan.

General references

Numbers 34:14
For the tribe of the children of the Reubenites according to their fathers' houses, and the tribe of the children of the Gadites according to their fathers' houses, have received, and half the tribe of Manasseh have received their inheritance;
Deuteronomy 29:8
And we took their land, and gave it for an inheritance to the Reubenites, and to the Gadites, and to the half tribe of the Manassites.
Joshua 13:16
And their territory was from Aroer, which is on the bank of the river Arnon, and the city that is in the midst of the ravine, and all the plateau by Medeba;
Psalm 136:21
And gave their land for an inheritance, for his loving-kindness endureth for ever,