The people of Gaza will shave their heads in mourning; Ashkelon will be silenced. O remnant of their valley, how long will you gash yourself?
The Prophet returns again to what is figurative, that he might more fully illustrate his prophecy, and more powerfully move the Jews. Now by baldness he points out a sign of mourning; for they were wont even to tear their faces with their nails, and to pluck off their hair.
As the Egyptians had often proved false friends, so the Philistines had always been sworn enemies, to the Israel of God, and the more dangerous and vexatious for their being such near neighbours to them. They were considerably humbled in David's time, but, it seems they had got head again and were a considerable people till Nebuchadnezzar cut them off with their neighbours, which is the event here foretold.
Commenting on Jeremiah 47:1-7
Baldness is come upon Gaza,.... The Targum is, "vengeance is come to the inhabitants of Gaza.'' It is become like a man whose hair is fallen from his head, or is clean shaved off; its houses were demolished; its inhabitants slain, and their wealth plundered; a pillaged and depopulated place.