Preacher’s kids, PKs for short, know a lot about church. Earlier this year, I was given the best church tour of my life by a young PK. I was in a town just outside of Atlanta, Georgia, to do a preaching series and the pastor of this church, a colleague and friend for many years, went to check on a worship detail while I waited in his office. As I waited, his eight-year-old daughter seized on the opportunity to show me around. I was escorted by a church expert in a princess costume into Sunday school rooms, through a dimly lit basement hallway, around the office work area, up into the balcony of the sanctuary, shown the small hole through which to peep at the people below, taken across street to the fellowship hall and finally, into the kitchen, where I was told where the cookies were stash…