In this section Paul turns to the implications of the doctrine of justification by faith alone, calling the church to make a clean break with legalistic teachers and legalistic teachings. This exposition of Galatians will focus on the definition of legalism and how to break free from it.

In Galatians 4:21-5:1, Paul does a deep dive into a familiar Old Testament passage, to demonstrate how even the Law of God teaches that salvation is only in Christ.