Joshua 21:4

Thirteen. These three tribes give more cities than any of the others, because their territories were the largest, Numbers xxxv. 8. Juda in particular, had a most extensive portion allotted to him at first; so that a part was afterwards taken away to accommodate Simeon and Dan, and now so many cities are appointed for the priests, (Calmet) who would thus have their residence near the temple, when it should be built. (Haydock) --- God ordered the lots according to the designs of his providence; and gave the priests, though so few in number, more than what fell to the share of all the rest of the family of Caath. (Calmet) --- This family had in all twenty-three cities, lying south of Dor and Bethsan, and leaving the tribe of Issachar on the north. Gerson had thirteen cities among the three other northern tribes, and that of Manasses on the east side of the Jordan; while Merari had twelve, more southward on the same side, in the tribes of Gad and of Ruben, and on the west of the Jordan, in the tribe of Zabulon. Thus these two families were more intermixed. (Haydock)