and it passed along to Azmon, and went out at the brook of Egypt; and the goings out of the border were at the sea: this shall be your south border.
Judah was the southernmost tribe west of the Jordan. Caleb’s family and the Simeonites lived within Judah’s territory. Simeon was the smallest tribe except Levi, and lost its territorial identity within Judah shortly after the conquest (cf. Genesis 49:5-7). For this reason some maps of the tribal allotments do not include Simeon.