Popular author, retreat leader, and priest Barbara Crafton rises early each morning, lights a candle, opens her Book of Common Prayer, and reads the morning office-the ancient Christian service that praises God at the beginning of a new day. When she is done, Crafton usually sits down at her computer and sends out an e-mail that says simply, "Let us bless the Lord," the traditional closing line of the morning prayer service. Her devoted readers reply,...