Judges 1:18
Also Judah took Gaza with the coast thereof, and Askelon with the coast thereof, and Ekron with the coast thereof.

2 Samuel 1:20
Tell it not in Gath, publish it not in the streets of Askelon; lest the daughters of the Philistines rejoice, lest the daughters of the uncircumcised triumph.

1 Samuel 6:17
And these are the golden emerods which the Philistines returned for a trespass offering unto the LORD; for Ashdod one, for Gaza one, for Askelon one, for Gath one, for Ekron one;