Diana Shiflett is ordained in the Evangelical Covenant church. She is an adjunct professor of youth ministry at North Park University, and a certified spiritual director. She has a master's degree in clinical psychology from Wheaton College.
Michael Wilcock was director of pastoral studies at Trinity College, Bristol, and then minister of St. Nicholas Church, Durham. He has also written the volumes on Judges, 1 and 2 Chronicles, Luke, and Revelation in the Bible Speaks Today series.
Brandon D. Smith (PhD, Ridley College, Melbourne) is assistant professor of theology and New Testament at Cedarville University. He is also a cofounder of the Center for Baptist Renewal and host of the Church Grammar podcast.
Tim Hein is vice principal and director of discipleship at Uniting College for Leadership and Theology in Adelaide, Australia. He is an ordained minister in the Uniting Church in Australia and speaks and preaches regularly on the Christian faith. He lives in Adelaide with his wife, Priscilla.
David Healey is Irish, and has worked in student ministry, as head of an international Church of England mission agency and patronage society, and in marketing in the photographic industry. He now teaches photography.
Adam McHugh is a wine tour guide, sommelier, and Certified Specialist of Wine. He is the author of The Listening Life and Introverts in the Church and a regular contributor to Edible Santa Barbara and Wine Country. He lives in California's Santa Ynez Valley.
Known around the evangelical world for their writing and speaking ministries, Stuart and Jill Briscoe have served at Elmbrook Church in Brookfield, Wisconsin for more than two decades. They have been married for nearly 50 years.