Psalm 51 is my favorite psalm and Paul Tripp is one of my favorite teachers. In 2008, he published a series of 52 meditations, all based on this psalm of 19 verses. Psalm 51 is a wonderful reminder that God can mercifully forgive even the deepest sin. Paul Tripp has ways of unfolding the layers of this psalm didactically and poetically. If you are wondering if God's grace is big enough for your sin, Whiter Than Snow may be just the devotional for you.