Numbers 21:23
And Sihon would not suffer Israel to pass through his border: but Sihon gathered all his people together, and went out against Israel into the wilderness: and he came to Jahaz, and fought against Israel.
Cross-reference
Numbers 32:33 records Moses giving the land of Sihon to Reuben, Gad, and half-Manasseh — the territory won in the battle at Jahaz.
Deuteronomy 2:30-32 recounts the same battle with Sihon, explaining his hardened heart and Israel's victory.
Deuteronomy 29:7 summarizes Sihon's attack and Israel's defeat of him, directly referencing this event.
Judges 11:20 cites Sihon's refusal to let Israel pass, quoting the same historical event in Jephthah's speech.
Deuteronomy 2:32 recounts the same battle at Jahaz, with Sihon coming out to fight Israel.
Joshua 12:2 lists Sihon among the defeated kings, summarizing the conquest that began at Jahaz.
Joshua 13:18 lists Jahaz as a city in Reuben's inheritance, directly linking to the battle site.
Joshua 21:36 names Jahaz as a Levitical city in Reuben, referencing the location of Sihon's defeat.
Psalm 136:19 gives thanks for God's victory over Sihon, the same king who attacked Israel at Jahaz.
Deuteronomy 29:8 describes the land inheritance that followed this battle, completing the narrative of Sihon's defeat.