(46, 47) Ekron, Ashdod, and Gaza are all identified. Observe that the Philistine territory is assigned to Judah here.

15:20-63 Here is a list of the cities of Judah. But we do not here find Bethlehem, afterwards the city of David, and ennobled by the birth of our Lord Jesus in it. That city, which, at the best, was but little among the thousands of Judah, Mic 5:2, except that it was thus honoured, was now so little as not to be accounted one of the cities.From Ekron even unto the sea,.... The Mediterranean sea, or the west, as the Targum:

all that lay near Ashdod, with their villages; this is the Azotus of the New Testament, Acts 8:40, another of the principalities of the Philistines, of which and Ekron See Gill on Amos 1:8 and See Gill on Zephaniah 2:4.