Numbers 34:3-4

3Your southern border shall be from the Wilderness of Zin along the border of Edom; then your southern border shall extend eastward to the end of the Salt Sea;

4your border shall turn from the southern side of the Ascent of Akrabbim, continue to Zin, and be on the south of Kadesh Barnea; then it shall go on to Hazar Addar, and continue to Azmon;