One of the reasons that many Christians seem to have no thrill at being forgiven through the gospel is that they have not been broken hearted over their sin. They have not despared. They have not wrestled with warranted self-loathing. They have not grieve over their sin because of its moral repugnance, but have grieved only because of guilt feelings and threats of hell.
John Piper, God Is the Gospel (Wheaton, IL: Crossway, 2005), 105.