Craig L. Nessan is Professor of Contextual Theology and Ethics and Academic Dean at Wartburg Theological Seminary in Dubuque, Iowa. He is the author of Beyond Maintenance to Mission (2nd ed., 2010), Shalom Church (2010), and The Vitality of Liberation Theology (Pickwick, 2012).

Arden Mahlberg is a practicing psychologist whose career has focused on the interface between psychotherapy and spirituality with the purpose of helping increase people's capacity for doing good in the world. With a substantial part of his counseling and consulting practice being with clergy, he has written extensively for clergy wellness publications. He has done research and writing questioning the bipolar assumption in Jungian personality theory and received a Terrytown Prize for his test of a new theory of archetypes.