The second effect of the Gospel is that it does not rebuke sinners at all, but rather takes all terror, all fear, all anguish from them, filling them with peace and joy in the Holy Spirit. At the return of the prodigal son, the father does not mention the son’s horrible, unspeakable conduct with a single word. He says nothing-nothing whatsoever-about it. Rather, the father embraces the prodigal, kisses him, and prepares a splendid feast for him. This is a glorious parable that demonstrates the effect of the Gospel. It removes all unrest and fills us with a blessed, heavenly peace.
Law & Gospel: How to Read and Apply the Bible by C. F. W. Walther (A Reader’s Edition) p 20