In the time of the Judges, God chose to leave certain nations in the land of Canaan to test the Israelites who had not participated in the earlier conquests. This decision was not arbitrary but served a dual purpose. Firstly, it was a means of teaching the new generation about warfare and the realities of life in the Promised Land. They needed to learn to rely on God for victory and guidance, just as their ancestors had. Secondly, it was a spiritual test, challenging them to remain faithful to God's commandments amidst the temptations and influences of the surrounding nations.
This scenario underscores a broader spiritual principle: challenges and trials can serve as opportunities for growth and learning. By facing difficulties, believers are encouraged to deepen their faith and trust in God. The presence of these nations was a constant reminder of the need for vigilance and obedience to God. It also illustrates how God can use even difficult circumstances to fulfill His purposes and to teach His people valuable lessons about dependence on Him.