Joshua 15:1-5

15:1 The land allotted to the tribe of Judah by its clans reached to the border of Edom, to the Wilderness of Zin in the Negev far to the south. 15:2 Their southern border started at the southern tip of the Salt Sea, 15:3 extended south of the Scorpion Ascent, crossed to Zin, went up from the south to Kadesh Barnea, crossed to Hezron, went up to Addar, and turned toward Karka. 15:4 It then crossed to Azmon, extended to the Stream of Egypt, and ended at the sea. This was their southern border.

15:5 The eastern border was the Salt Sea to the mouth of the Jordan River.

The northern border started north of the Salt Sea at the mouth of the Jordan,