law no one will be justified.… I do not nullify the grace of God, for if justification were through the law, then Christ died for no purpose” (Gal. 2:16, 21; cf. Rom. 2–3). When people hear the gospel, which at its heart is the doctrine of justification by faith alone, and they think it is too good to be true, it is only then that they have begun to plumb the depths of God’s love for us in Christ. In the doctrine of justification by faith alone, we must realize that legalism is a poor substitute