How the Bible Actually Works: In Which I Explain How An Ancient, Ambiguous, and Diverse Book Leads Us to Wisdom Rather Than Answers—and Why That's Great News

by Peter Enns

Paul even goes so far as to say that the main purpose of the Law was to show just how bad we are at keeping it (the Law multiplied the trespass, as he puts it in Rom. 5:20) and to show, therefore, how great God’s grace is by comparison.