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 completely defeated Moab. The towns of Heshbon and Dibon, of Nophah and Medeba are ruined and gone.

Joshua 13:16

Their coast 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

We took possession of this land. I gave the tribes of Reuben and Gad the land north of Aroer near the Arnon Valley and half of the mountain region of Gilead with its cities.

Deuteronomy 3:16

I assigned the territory from Gilead to the Arnon River to the tribes of Reuben and Gad. The middle of the river was their southern boundary, and their northern boundary was the Jabbok River, part of which formed the Ammonite border.

Joshua 12:2

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

Isaiah 15:2

They have gone up to the temple and to Dibon, to the high places to weep. Moab wails over Nebo and Medeba. Everyone's head is bald and every beard is cut off.

Jeremiah 48:18

You that live in Dibon come down from your place of honor and sit on the ground in the dust. Moab's destroyer is here and has left its forts in ruins.

Jeremiah 48:22

Dibon, Nebo, 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 completely defeated Moab. The towns of Heshbon and Dibon, of Nophah and Medeba are ruined and gone.
Isaiah 15:2
They have gone up to the temple and to Dibon, to the high places to weep. Moab wails over Nebo and Medeba. Everyone's head is bald and every beard is cut off.
Jeremiah 48:18
You that live in Dibon come down from your place of honor and sit on the ground in the dust. Moab's destroyer is here and has left its forts in ruins.

General references

Numbers 21:31
After the Israelites settled in the Amorite territory,
Numbers 34:14
The tribes of Reuben and Gad and the eastern half of Manasseh have received their property, divided according to their families,
Joshua 13:16
Their coast 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
The people of Israel sent messengers to Sihon, the Amorite king of Heshbon. They asked him for permission to go through his country to their own land.