Joshua 13:9

From Aroer that is upon the bank of the river Arnon, and the city that is in the midst of the river, and all the plain of Medeba to Dibon;

Numbers 21:30

We have shot at them; Heshbon has perished even to Dibon, and we have laid them waste even to Nophah, which reacheth to Medeba.

Joshua 13:16

And their border was from Aroer that is on the bank of the river Arnon, and the city that is in the midst of the river, and all the plain by Medeba;

Deuteronomy 3:12

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

Deuteronomy 3:16

And to the Reubenites and to the Gadites I gave from Gilead even to the river Arnon half the valley, and the border even to the river Jabbok, which is the border of the children of Ammon:

Joshua 12:2

Sihon king of the Amorites, who dwelt in Heshbon, and ruled from Aroer, which is upon the bank of the river Arnon, and from the middle of the river, and from half Gilead, even to the river Jabbok, which is the border of the children of Ammon;

Isaiah 15:2

He is gone up to Bajith, and to Dibon, the high places, to weep: Moab shall howl over Nebo, and over Medeba: on all their heads shall be baldness, and every beard shorn.

Jeremiah 48:18

Thou daughter that dost inhabit Dibon, come down from thy glory, and sit in thirst; for the spoiler of Moab shall come upon thee, and he shall destroy thy strong holds.

Jeremiah 48:22

And upon Dibon, and upon Nebo, and upon Beth-diblathaim,

Treasury of Scripture Knowledge

Summary

From Aroer, that is upon the bank of the river Arnon, and the city that is in the midst of the river, and all the plain of Medeba unto Dibon;

Bible References

All the plain

Numbers 21:30
We have shot at them; Heshbon has perished even to Dibon, and we have laid them waste even to Nophah, which reacheth to Medeba.
Isaiah 15:2
He is gone up to Bajith, and to Dibon, the high places, to weep: Moab shall howl over Nebo, and over Medeba: on all their heads shall be baldness, and every beard shorn.
Jeremiah 48:18
Thou daughter that dost inhabit Dibon, come down from thy glory, and sit in thirst; for the spoiler of Moab shall come upon thee, and he shall destroy thy strong holds.

General references

Numbers 21:31
Thus Israel dwelt in the land of the Amorites.
Numbers 34:14
For the tribe of the children of Reuben, according to the house of their fathers, and the tribe of the children of Gad according to the house of their fathers, have received their inheritance; and half the tribe of Manasseh have received their inheritance:
Joshua 13:16
And their border was from Aroer that is on the bank of the river Arnon, and the city that is in the midst of the river, and all the plain by Medeba;
Judges 11:19
And Israel sent messengers to Sihon king of the Amorites, the king of Heshbon; and Israel said to him, Let us pass, we pray thee, through thy land to my place.