"The purpose of Judges is to show God’s people how to live in a Satan-infested world, and when they experience failure, to know how not to be defeated. These principles are taught throughout scripture, but seeing them dramatized in successive, real-life situations with different people in different settings, makes it very real and can strengthen the Christian’s spiritual walk.
The 2 lessons in Ruth are about God taking a Gentile and placing her in the godly ancestry of Jesus, the Messiah. Boaz pictures Christ, our Redeemer, and Ruth pictures the Church."