Num 34:4-5 The Boundaries of Canaan
And your border shall turn from the south to the ascent of Akrabbim, and pass on to Zin: and the going forth thereof shall be from the south to Kadesh-barnea, and shall go on to Hazar-addar, and pass on to Azmon: And the border shall fetch a compass from Azmon unto the river of Egypt, and the goings out of it shall be at the sea.
Josh. 15:1-4 The tribe of Judah
The lot for the tribe of the people of Judah according to their families reached southward to the boundary of Edom, to the wilderness of Zin at the farthest south. And their south boundary ran from the end of the Dead Sea, from the bay that faces southward; it 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, makes a turn to Karka, passes along to Azmon, goes out by the Wadi of Egypt, and comes to its end at the sea. This shall be your south boundary.