The Philistines: some of, Left to Prove Israel
Source: TTT
Judges 3:1–3
These are the nations that the LORD left to test all the Israelites who had not known any of the wars in Canaan, / if only to teach warfare to the subsequent generations of Israel, especially to those who had not known it formerly: / the five rulers of the Philistines, all the Canaanites, the Sidonians, and the Hivites who lived in the mountains of Lebanon from Mount Baal-hermon to Lebo-hamath.