The people of Gaza will shave their heads in mourning. The people of Ashkelon will be struck dumb. How long will you gash yourselves to show your sorrow, you who remain of Philistia’s power?

The Lord spoke to the prophet Jeremiah about the Philistines before Pharaoh attacked Gaza.

the foreigners living in Egypt; all the kings of the land of Uz; all the kings of the land of the Philistines, the people of Ashkelon, Gaza, Ekron, the people who had been left alive from Ashdod;