Joshua 15:1-4 NIV

[1] The allotment for the tribe of Judah, according to its clans, extended down to the territory of Edom, to the Desert of Zin in the extreme south. [2] Their southern boundary started from the bay at the southern end of the Dead Sea, [3] crossed south of Scorpion Pass, continued on to Zin and went over to the south of Kadesh Barnea. Then it ran past Hezron up to Addar and curved around to Karka. [4] It then passed along to Azmon and joined the Wadi of Egypt, ending at the Mediterranean Sea. This is their southern boundary.