Obsessive-compulsive disorder (OCD) is a relentless condition, the primary symptom being the occurrence of terrifying ideas, images, and urges that jump into a person's mind and return again and again, despite the individual's attempt to remove them. Christians who suffer from OCD may grapple with additional guilt, as the undesired thoughts are frequently of a spiritual nature. Yet people may be surprised to learn that some of the greatest leaders...