1 Samuel 29:2
"And the lords of the Philistines passed on by hundreds, and by thousands: but David and his men passed on in the rereward with Achish."
Cross References (ranked by relevance)
Joshua 13:3
From Sihor, which is before Egypt, even unto the borders of Ekron northward, which is counted to the Canaanite: five lords of the Philistines; the Gazathites, and the Ashdothites, the Eshkalonites, the Gittites, and the Ekronites; also the Avites:
1 Samuel 6:4
Then said they, What shall be the trespass offering which we shall return to him? They answered, Five golden emerods, and five golden mice, according to the number of the lords of the Philistines: for one plague was on you all, and on your lords.