Joshua 15:2-5

2And their southern border was from the end of the salt sea, from the tongue that turns southward;

3and it went out south of the ascent of Akrabbim, and passed on to Zin, and went up on the south of Kadesh-barnea, and passed to Hezron, and went up toward Addar, and turned toward Karkaah,

4and passed on to Azmon, and went out by the torrent of Egypt; and the border ended at the sea. That shall be your border southward.

5— And the eastern border was the salt sea as far as the end of the Jordan. — And the border on the north side was from the tongue of the salt sea, at the end of the Jordan;