Deuteronomy 3:12

And this land we took in possession at that time: from Aroer, which is by the valley of the Arnon, and half the hill-country of Gilead, and the cities thereof, gave I unto the Reubenites and to the Gadites:

Deuteronomy 2:36

From Aroer, which is on the edge of the valley of the Arnon, and from the city that is in the valley, even unto Gilead, there was not a city too high for us; Jehovah our God delivered up 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'shall remain with us beyond the Jordan.

Deuteronomy 4:48

from Aroer, which is on the edge of the valley of the Arnon, even unto mount Sion (the same is 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 city that is in the middle of the valley, and half Gilead, even unto the river Jabbok, the border of the children of Ammon;

Joshua 13:8-28

With him the Reubenites and the Gadites received their inheritance, which Moses gave them, beyond the Jordan eastward, even 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 valley of the Arnon, 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 valley of the Arnon, and from the city that is in the valley, even unto Gilead, there was not a city too high for us; Jehovah our God delivered up all before us:
Deuteronomy 4:48
from Aroer, which is on the edge of the valley of the Arnon, even unto mount Sion (the same is Hermon),
Numbers 32:33
And Moses gave unto them, even to the children of Gad, and to the children of Reuben, and unto 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 to the cities thereof with their borders, even the cities of the land round about.
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 city that is in the middle of the valley, and half Gilead, even unto the river Jabbok, the border of the children of Ammon;
Joshua 13:8
With him the Reubenites and the Gadites received their inheritance, which Moses gave them, beyond the Jordan eastward, even 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 valley of the Arnon, even Gilead and Bashan.

General references

Numbers 34:14
for the tribe of the children of Reuben according to their fathers houses, and the tribe of the children of Gad according to their fathers houses, have received, and the half-tribe of Manasseh have received, their inheritance:
Deuteronomy 29:8
and we took their land, and gave it for an inheritance unto the Reubenites, and to the Gadites, and to the half-tribe of the Manassites.
Joshua 13:16
And their border was 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 by Medeba;
Psalm 136:21
And gave their land for a heritage; For his lovingkindness endureth for ever;

American Standard Version Public Domain