Kelly Flanagan (PhD, Pennsylvania State University) is a clinical psychologist, popular speaker, and the author of The Marriage Manifesto, Loveable, and True Companions. He has also written for publications such as Christianity Today, Reader's Digest, and Huffington Post, and he has appeared on the TODAY Show with his daughter. He lives in Dixon, Illinois, with his wife who is also named Kelly, and their three children.

E. Randolph Richards (PhD, Southwestern Baptist Theological Seminary) is provost and professor of biblical studies in the School of Ministry at Palm Beach Atlantic University. He is a popular speaker and has authored and coauthored dozens of books and articles, including Paul Behaving Badly, A Little Book for New Bible Scholars, Rediscovering Jesus, Misreading Scripture with Western Eyes, Rediscovering Paul, The Story of Israel, and Paul and First-Century Letter Writing.

Albert Haase, OFM, is a preacher, teacher, and spiritual director. A former missionary to mainland China for over eleven years, he is the award-winning author of ten books on popular spirituality and the presenter on five bestselling DVDs. He holds a PhD in historical theology from Fordham University and an MDiv from Catholic Theological Union. He is currently serving as chaplain at Cedarbrake Retreat Center near Austin, Texas.

Calvin Miller (1936–2012) was a pastor, professor and storyteller, best known for The Singer Trilogy, a mythic retelling of the New Testament story in the spirit of C. S. Lewis and J. R. R. Tolkien. A prolific artist and a writer's writer, Miller garnered respect and praise throughout his career from peers like Luci Shaw, Max Lucado and Philip Yancey. He was the author of more than forty books of popular theology and Christian inspiration including such recent books as Letters to Heaven, The Path of Celtic Prayer, Letters to a Young Pastor and his memoir Life Is Mostly Edges.