Churches are booking comedians to attract new members, and opening up opportunities for budding comics... When the Rev. Jay Laffoon began organizing Christian marriage conferences 10 years ago, he worried that many couples would arrive expecting cautionary tales about sin and hell and a long list of don’ts and few dos. Believing that Christian marriage is a thing of joy instituted by God, Laffoon wanted people to enjoy the gatherings. “A joyful heart is good medicine; but a broken spirit dries up the bones,” he said, quoting Proverbs 17:22. So he tried a radical approach; Laffoon hired a stand-up comedian...