עַל־הַיּ֗וֹם הַבָּא֙ לִשְׁד֣וֹד אֶת־כָּל־פְּלִשְׁתִּ֔ים לְהַכְרִ֤ית לְצֹר֙ וּלְצִיד֔וֹן כֹּ֖ל שָׂרִ֣יד עֹזֵ֑ר כִּֽי־שֹׁדֵ֤ד יְהוָה֙ אֶת־פְּלִשְׁתִּ֔ים שְׁאֵרִ֖ית אִ֥י כַפְתּֽוֹר׃
Because of the day that cometh to spoil all the Philistines, to cut off from Tyre and Zidon every helper that remaineth; for the LORD will spoil the Philistines, the remnant of the isle of Caphtor.
Rashi on Jeremiah
to cut off from Tyre and Zidon The Philistines were aiding them against their enemies.