Timothy J. Keller (1950–2023) was the founding pastor of Redeemer Presbyterian Church in New York City, cofounder of Redeemer City to City, and the author of numerous books, including The Reason for God, The Prodigal God, and The Meaning of Marriage. His thirty-one books have sold over six million copies and have been translated into twenty-nine languages.

Daniel Montgomery is the founder and CEO of Leadership Reality, a learning and development agency. Daniel founded and led Sojourn Community Church for over seventeen years and is the founder of Sojourn Network, a church planting network in North America. He coaches, writes, and consults on the topic of leadership, theology, and mission for businesses and churches around the world.

Mike Cosper is the executive director of Harbor Media, a non-profit media company serving Christians in a post-Christian world. He served for sixteen years as a pastor at Sojourn Community Church in Louisville, Kentucky, and is the author of Recapturing the Wonder, The Stories We Tell, and Rhythms of Grace. He lives with his family in Louisville, Kentucky.

Alan Hirsch is an award-winning author on various aspects of missional Christianity and co-founder of Future Travelers, an intentional learning journey for contemporary churches seeking to transition to becoming authentic movements