Gary P. Stewart (M.Div., Grace Theological Seminary; D.Min., Wheaton Theological Seminary; Th.M., Bethel Theological Seminary; M.A. Trinity International University) has authored, co-authored, and edited numerous books and articles. He is a frequent media and conference speaker on marriage. He and his wife, Kathie, have been married for twenty-three years and are the parents and grandparents of Linsay, Katie, Jeff, and Lauralyn. John Kilner is president of The Center for Bioethics and Human Dignity, an organization that exists to help individuals and organizations address the pressing bioethical challenges of our day.