Joshua 15:1-4

1Now the lot (allotment) for the tribe of the sons of Judah according to their families reached [southward to] the border of Edom, southward to the wilderness of Zin at its most southern part.

2Their southern border was from the lower end of the Salt (Dead) Sea, from the bay that turns southward.

3Then it proceeded southward to the ascent of Akrabbim and continued along to Zin, and then went by the south of Kadesh-barnea and continued along to Hezron, and went up to Addar and turned about to Karka.

4It continued along to Azmon and proceeded to the Brook of Egypt (Wadi el-Arish), and the border ended at the [Mediterranean] sea. This was their southern border.