Christopher D. Marshall wrote Beyond Retribution: A New Testament Vision for Justice, Crime and Punishment. An expert in biblical ethics and peace theology, he teaches religious studies at Victoria University of Wellington in New Zealand.

Pamela Jordan is an associate professor of family and child nursing at the University of Washington and developer of the Becoming Parents Program. Her research focuses on the transition to parenthood and supporting individuals and couples as they become parents.

Judith K. Balswick is senior professor of marital and family therapy in the School of Psychology at Fuller Theological Seminary in Pasadena, Calif.

Jack O. Balswick is senior professor of sociology and family development in the School of Psychology at Fuller Theological Seminary in Pasadena, Calif.

Scott Stanley is co-director of the Center for Marital and Family Studies at the University of Denver. He has published widely both research reports as well as writings for couples, with a key focus on commitment theory and research.

Galena K. Rhoades is a senior researcher for the Center for Marital and Family Studies in the psychology department at the University of Denver.

Glenn W. Olsen is professor emeritus of history at the University of Utah in Salt Lake City. He is the editor of Christian Marriage: A Historical Study.

Howard Markman is a professor of psychology and co-director of the Center for Marital and Family Studies at the University of Denver in Colorado. He is internationally known for his work on the prediction and prevention of divorce and the effects of destructive conflict, healthy marriages and relationship distress on mental health and well-being.

Alan J. Hawkins is a professor of family life at Brigham Young University in Provo, Utah. He earned a doctorate in human development and family studies at Pennsylvania State University in 1990.