Joshua 18:15-19

15The south side began at the end of Kirjath Jearim, and the border extended on the west and went out to the spring of the waters of Nephtoah.

16Then the border came down to the end of the mountain that lies before the Valley of the Son of Hinnom, which is in the Valley of the Rephaim on the north, descended to the Valley of Hinnom, to the side of the Jebusite city on the south, and descended to En Rogel.

17And it went around from the north, went out to En Shemesh, and extended toward Geliloth, which is before the Ascent of Adummim, and descended to the stone of Bohan the son of Reuben.

18Then it passed along toward the north side of Arabah, and went down to Arabah.

19And the border passed along to the north side of Beth Hoglah; then the border ended at the north bay at the Salt Sea, at the south end of the Jordan. This was the southern boundary.