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 unto Dibon;
Cross-reference
Joshua 13:16 continues the detailed boundary description of Reuben's territory, starting from Aroer as in verse 9.
Joshua 12:2 describes Sihon's kingdom from Aroer, the same location marking the boundary of the eastern inheritance in verse 9.
Deuteronomy 3:12 describes the same land allocation from Aroer to Gilead given to Reuben and Gad.
Deuteronomy 3:16 also details the territory from Gilead to the Arnon valley for Reuben and Gad.
Deuteronomy 2:36 recounts conquest from Aroer to Gilead — directly parallel to the territory described here.
Deuteronomy 3:8 summarizes the land taken from the Arnon to Hermon — includes the Arnon river mentioned here.
1 Kings 4:19 lists the same region as 'the land of Sihon king of Heshbon,' directly tying Solomon's administrative districts to the conquered territory.
2 Kings 10:33 recounts Hazael taking 'from Aroer by the Arnon valley' — the same area later lost, showing the region's shifting fortunes.
2 Samuel 24:5 repeats the same geographical detail: camping at Aroer, 'the city in the middle of the valley,' showing this location's enduring identity.
Numbers 21:30 mentions Dibon and Medeba in the song about Sihon's defeat — same cities as in the land description.
Jeremiah 48:18 addresses Dibon, a Moabite city also listed in the territory description here.
Jeremiah 48:20 proclaims judgment on Moab 'by the Arnon' — the same river border from Joshua, now a site of lament.
Jeremiah 48:22 includes Dibon and Nebo in a list of Moabite cities — same region as the land allotment.