BY TIM KELLER
Martin Luther opened the Reformation by nailing "The Ninety-Five Theses" to the door of Wittenberg Cathedral. The very first of the theses was: "Our Lord and Master Jesus Christ.willed the entire life of believers to be one of repentance." On the surface this looks a little bleak! Luther seems to be saying Christians will never be making much progress. But of course that wasn't Luther's point at all. He was saying that repentance is the way we make progress in the Christian life. Indeed, pervasive, all-of- life-repentance is the best sign that we are growing deeply and rapidly into the character of Jesus....