Albert Barnes Commentary Joshua 15:1

"And the lot for the tribe of the children of Judah according to their families was unto the border of Edom, even to the wilderness of Zin southward, at the uttermost part of the south." — Joshua 15:1 (ASV)

The inheritance of the tribe of Judah is described first by its general boundaries on all four sides (Joshua 15:1–12); then reference is again made, for the sake of completeness, to the special inheritance of Caleb which lay within these boundaries (Joshua 15:13–20); and lastly, a list of the towns is given (Joshua 15:21–63). Consult the marginal references.