Gaza, Ashkelon, Ashdod, Ekron

Zep 2:4

For Gaza shall be forsaken,
And Ashkelon desolate;
They shall drive out Ashdod at noonday,
And Ekron shall be uprooted.

Amo 1:8

I will cut off the inhabitant from Ashdod,
And the one who holds the scepter from Ashkelon;
I will turn My hand against Ekron,
And the remnant of the Philistines shall perish,”
Says the Lord GOD.

Jer 25:20

all the mixed multitude, all the kings of the land of Uz, all the kings of the land of the Philistines (namely, Ashkelon, Gaza, Ekron, and the remnant of Ashdod);