Judges 3:2-4

2(he did this only to teach warfare to the descendants of the Israelites who had not had previous battle experience):

3the five rulers of the Philistines, all the Canaanites, the Sidonians, and the Hivites living in the Lebanon mountains from Mount Baal Hermon to Lebo Hamath.

4They were left to test the Israelites to see whether they would obey the Lord’s commands, which he had given their ancestors through Moses.