Joshua 15:1
This then was the lot of the tribe of the children of Judah by their families; even to the border of Edom the wilderness of Zin southward was the uttermost part of the south coast.
Cross-reference
Joshua 14:2 establishes division by lot, which Joshua 15:1 applies to Judah's inheritance.
Joshua 18:5 explicitly states Judah continues in his territory on the south, directly echoing this allotment.
Joshua 18:11 places Benjamin's territory between Judah and Joseph, confirming Judah's location to the south.
Joshua 18:19 defines Benjamin's southern border at the Salt Sea, which is also the starting point of Judah's boundary here.
Numbers 26:55 commands division by lot, the method used for Judah's territory in Joshua 15:1.
Numbers 26:56 adds detail about dividing between many and few, a principle in the lot for Judah.
Numbers 33:36 places the wilderness of Zin at Kadesh, the same region as Judah's southern border in Joshua 15:1.
Numbers 33:37 mentions mount Hor on Edom's edge, aligning with Judah's southern border from Joshua 15:1.
Numbers 34:3-5 defines the southern border of Canaan, which Joshua 15:1 uses for Judah's territory.
Numbers 13:21 mentions the wilderness of Zin as the southern extent of the spy mission, same location as Judah's boundary here.
Numbers 20:1 also places the congregation in the wilderness of Zin at Kadesh, tying to Judah's southern border.
Ezekiel 48:7 assigns Judah a portion in the visionary land division, paralleling the historical allotment here.
Numbers 33:54 gives instructions for dividing land by lot, the same process that results in Judah's allotment here.
Numbers 34:17 names the leaders who will divide the land, including Eleazar and Joshua, whose work leads to Judah's territory.
Ezekiel 47:19 describes the southern border of the land in a vision, similar to Judah's border in Joshua 15:1.