Joshua 15:2-5

2And their south boundary ran from the end of the Salt Sea, from the bay that faces southward.

3It goes out southward of the ascent of Akrabbim, passes along to Zin, and goes up south of Kadesh-barnea, along by Hezron, up to Addar, turns about to Karka,

4passes along to Azmon, goes out by the Brook of Egypt, and comes to its end at the sea. This shall be your south boundary.

5And the east boundary is the Salt Sea, to the mouth of the Jordan. And the boundary on the north side runs from the bay of the sea at the mouth of the Jordan.