Jeremiah 47:1, 4

The word of Jehovah that came to Jeremiah the prophet concerning the Philistines, before that Pharaoh smote Gaza.

because of the day that cometh to destroy all the Philistines, to cut off from Tyre and Sidon every helper that remaineth: for Jehovah will destroy the Philistines, the remnant of the isle of Caphtor.