Are the modern so called Philistines really Philistines. Possibly not, Possibly they are?. Yassar Arafat started calling them Philistines about 50 years ago. They call themselves Philistines and live on the sea coast and thus seem to be a fit.
Eze 25:15 Thus saith the Lord GOD; Because the Philistines have dealt by revenge, and have taken vengeance with a despiteful heart, to destroy it for the old hatred;
Eze 25:16 Therefore thus saith the Lord GOD; Behold, I will stretch out mine hand upon the Philistines, and I will cut off the Cherethims, and destroy the remnant of the sea coast.
Eze 25:17 And I will execute great vengeance upon them with furious rebukes; and they shall know that I am the LORD, when I shall lay my vengeance upon them.
Please note Gaza is on the sea coast.
The next scriptures make things a lot clearer.
Zep 2:4 For Gaza shall be forsaken, and Ashkelon a desolation: they shall drive out Ashdod at the noon day, and Ekron shall be rooted up.
Zep 2:5 Woe unto the inhabitants of the sea coast, 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.
Zep 2:6 And the sea coast shall be dwellings and cottages for shepherds, and folds for flocks.
Zep 2:7 And the coast shall be for the remnant of the house of Judah; they shall feed thereupon: in the houses of Ashkelon shall they lie down in the evening: for the LORD their God shall visit them, and turn away their captivity.
Pretty clear it is Gaza now.
Isa 11:11 And it shall come to pass in that day, that the Lord shall set his hand again the second time to recover the remnant of his people, which shall be left, from Assyria, and from Egypt, and from Pathros, and from Cush, and from Elam, and from Shinar, and from Hamath, and from the islands of the sea.
Isa 11:12 And he shall set up an ensign for the nations, and shall assemble the outcasts of Israel, and gather together the dispersed of Judah from the four corners of the earth.
Isa 11:13 The envy also of Ephraim shall depart, and the adversaries of Judah shall be cut off: Ephraim shall not envy Judah, and Judah shall not vex Ephraim.
Isa 11:14 But they shall fly upon the shoulders of the Philistines toward the west; they shall spoil them of the east together: they shall lay their hand upon Edom and Moab; and the children of Ammon shall obey them.
Isa 11:15 And the LORD shall utterly destroy the tongue of the Egyptian sea; and with his mighty wind shall he shake his hand over the river, and shall smite it in the seven streams, and make men go over dryshod.
Isa 11:16 And there shall be an highway for the remnant of his people, which shall be left, from Assyria; like as it was to Israel in the day that he came up out of the land of Egypt.
Isaiah 11:14 says it nicely. Gaza contains our enemies residing on what is our land, they being our enemies get destroyed. Probably in Zech.12 or possibly before.