When the Anderson family gathers to celebrate Bob and Susan's 40th wedding anniversary, no more than the usual fussing is expected. Both parents are college professors, and the atheist philosopher Bob plans to have a few drinks before dealing with his eldest son, James, the pastor of a suburban Dallas mega-church and a well-known televangelist. Theological bickering has been a normal part of their relationship for years, and by this time really only annoys Susan, who keeps trying to change the subject. But no one was expecting younger son George to pick this day to announce both that he's...