Your southern border will extend from the Wilderness of Zin along the border of Edom. On the east, your southern border will run from the end of the Salt Sea,
KJV
Then your south quarter shall be from the wilderness of Zin along by the coast of Edom, and your south border shall be the outmost coast of the salt sea eastward:
ASV
then your south quarter shall be from the wilderness of Zin along by the side of Edom, and your south border shall be from the end of the Salt Sea eastward;