'Southern' in the Bible

Your southern edge will be from the desert of Zin toward the side of Edom, and your southern border will be from the end of the Salt Sea to the east;

You will measure outside the city the eastern edge two thousand cubits, for the southern edge two thousand cubits, for the western edge two thousand cubits, and for the northern edge two thousand cubits, with the city in the middle; this will be for them the pasturelands of the cities.