Matthew Poole and continuators on Zephaniah 2:5

5 Wo unto the inhabitants of the seacoasts ; the nation of the Cherethites : the word of the LORD is against you: O Canaan : the land of the Philistines, I will even destroy thee, that there shall be no inhabitant .

Now all the Philistines are threatned, whereas before he named onely those four Cities.

The Coasts of the great, or western Sea, now the Mediterrane, on which the Philistines of old did dwell.

Or destroyers, men that were stout but fierce and perhaps terrible to Neighbours and Forreigners that had the hard hap to be forced on their Coasts by violence of Sea. They were great Souldiers, and lived Switzer-like, Guards to David, it may be to other Kings also.

His purpose, his threats too by his Prophet.

That part that the Philistines did by force keep from the Iewes.

Though the Chaldeans be the men shall destroy, yet the Lord will do it also; they his servants, he chief, in doing it.

No more Cities, nor Citizens to dwell therein.