Martin Luther, during the 1500s, lived much of his life feeling as though he was somebody of no reputation. He was a monk, and whenever he felt guilty, he would beat himself multiple times across his back with stripes. This was a common practice among Christian monks at the time, and he would beat himself mercilessly, often to the point that he despaired of life. Then one day, I believe, while reading Scripture, he came across Ephesians 2:8–9. After reading it, he was astonished. "Whoa, wait...