and the border went up to Debir from the valley of Achor, and so northward, looking toward Gilgal, that is over against the ascent of Adummim, which is on the south side of the river; and the border passed along to the waters of En Shemesh, and the goings out of it were at En Rogel;
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.