Nibshan, the City of Salt, and En-gedi—six cities, along with their villages.
We have here a list of the several cities that fell within the lot of the tribe of Judah, which are mentioned by name, that they might know their own, and both keep it and keep to it, and might neither through cowardice nor sloth lose the possession of what was their own. I.
Commenting on Joshua 15:20-63
CITIES OF JUDAH. (Jos. 15:21-63) the uttermost cities of the tribe of the children of Judah--There is given a list of cities within the tribal territory of Judah, arranged in four divisions, corresponding to the districts of which it consisted--the cities in the southern part (Jos 15:21-32), those in the lowlands (Jos 15:33-47), those in the highlands (Jos 15:48-60), and those in the desert (Jos 15:61-62).
Commenting on Joshua 15:21-63
And Nibshan, and the city of Salt, and Engedi; six cities with their villages. (l) Of this city the salt sea has it's name.