The Nations Left to Test Israel

31 These are the nations the Lord left to test all those Israelites who had not experienced any of the wars in Canaan 2 (he did this only to teach warfare to the descendants of the Israelites who had not had previous battle experience): 3 the 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. 4 They were left to test the Israelites to see whether they would obey the Lord's commands, which he had given their ancestors through Moses.

Matthew Henry's Commentary on Judges 3:1-4

Commentary on Judges 3:1-7

(Read Judges 3:1-7)

As the Israelites were a type of the church on earth, they were not to be idle and slothful. The Lord was pleased to try them by the remains of the devoted nations they spared. Temptations and trials detect the wickedness of the hearts of sinners; and strengthen he graces of believers in their daily conflict with Satan, sin, and this evil world. They must live in this world, but they are not of it, and are forbidden to conform to it. This marks the difference between the followers of Christ and mere professors. The friendship of the world is more fatal than its enmity; the latter can only kill the body, but the former murders many precious souls.