On Saturday, October 31, 1517, Dr. Martin Luther—a 33-year-old Roman Catholic priest and theology professor at the University of Wittenberg—stood in front of the doors to the Castle Church and nailed a paper with ninety-five theses, handwritten in Latin. Hoping to spark an academic discussion and to effect change in the church, his first point was that Christ the Lord calls for all of life to be marked by repentance. Little did he know that this 1,576-word disputation would eventually change the course of history through a reformation of the church and the culture. Below is an interview with Carl...