Tony Campolo is professor emeritus of sociology at Eastern University. Previously he served for ten years on the faculty of the University of Pennsylvania. Dr. Campolo is a media commentator on religious, social, and political matters, and hosts From Across the Pond, a weekly program on the Premier Radio Network in England.

Mary Albert Darling, associate professor of communication at Spring Arbor University, is a Protestant who has been trained in spiritual direction in the Jesuit tradition. She also teaches in her university's Spiritual Formation and Leadership graduate program.