We all sit in church on Sundays and see that one person who obviously is a waaaaaay better Christian than we are. Or so they think. That person wrote a book. A really funny book, to be precise.
Betty gives advice on how to be a good Christian (but not as good as she is, thankyouverymuch) in this tongue-in-cheek how-to manual. She answers letters from her disciples and offers advice on how to follow the New Testament, ignoring the Old Testament with all its unsavory details.
Very funny if you have a sense of humor about religion. God does!