Joshua 15:4

15:4 It then crossed to Azmon, extended to the Stream of Egypt, and ended at the sea. This was their southern border.

Joshua 15:21

15:21 These cities were located at the southern extremity of Judah’s tribal land near the border of Edom: Kabzeel, Eder, Jagur,

Joshua 18:15

18:15 The southern side started on the edge of Kiriath Jearim and extended westward to the spring of the waters of Nephtoah.