Joshua 13:3

13:3 from the Shihor River east of Egypt northward to the territory of Ekron (it is regarded as Canaanite territory), including the area belonging to the five Philistine lords who ruled in Gaza, Ashdod, Ashkelon, Gath, and Ekron, as well as Avvite land

Exodus 23:31

23:31 I will set your boundaries from the Red Sea to the sea of the Philistines, and from the desert to the River, for I will deliver the inhabitants of the land into your hand, and you will drive them out before you.