Zaccaria 9:7

And I will take away his blood out of his mouth, and his abominations from between his teeth: but he that remaineth, even he, shall be for our God, and he shall be as a governor in Judah, and Ekron as a Jebusite. I will take away his blood out of his mouth - The Philistines, when incorporated with the Israelites, shall abstain from blood, and every thing that is abominable.

And Ekron as a Jebusite - As an inhabitant of Jerusalem. Many of the Philistines became proselytes to Judiasm; and particularly the cities of Gaza, and Ashdod. See Josephus Antiq. lib. xlii., c. 15, s. 4.