Contributors

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  Erika Diaz-Castro

  Podcast Guest
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Team Members

Erika Diaz-Castro
Podcast Guest
Erika Diaz-Castro is a wife, homeschooling mother, Bible teacher, and founder of Her Renewed Strength, a ministry equipping women to know God’s Word and grow in confidence through it. Once a skeptic, Erika now helps others cultivate daily spiritual discipline and find freedom in surrendering to Christ. She also hosts Her Renewed Strength Podcast and is pursuing a Master of Theology with a concentration in Apologetics and Philosophy.
 
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  Jana Harmon

  Senior Fellow For Christian Apologetics, CSLI
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Team Members

Jana Harmon
Senior Fellow For Christian Apologetics, CSLI
Jana Harmon, Ph.D, is the Senior Fellow For Christian Apologetics for the C.S. Lewis Institute and a Teaching Fellow for C.S. Lewis Institute Atlanta. She serves on the Atlanta Advisory Board and as an Adjunct Professor of Cultural Apologetics at Biola University. Her doctoral research studied the religious conversion of atheists to Christianity looking at the perspectives and stories of 50 former Atheists. She views apologetics through a practical, evangelistic lens. She is the host of the podcast eX-skeptic for the C.S. Lewis Institute. Jana received her PhD from the University of Birmingham, England.
 
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  Heather Sewell

  Ministry Leader & Speaker
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Team Members

Heather Sewell
Ministry Leader & Speaker
Heather Sewell is a ministry leader, speaker, and storyteller whose faith journey began with basic questions concerning God’s goodness in reaching secular religions. She started her ministry work at Orphan Care Alliance in Kentucky and now works at Summit Ministries in Colorado Springs. She now has the opportunity to equip parents and teens nationwide through the Summit Student Conferences and Ambassador Program, empowering families to help their teens grow in faith with clarity and confidence. With more than 10 years of experience working with children and youth, Heather has seen firsthand the questions and cultural pressures that can shake a young person’s beliefs. Her journey, rooted in her own story of God’s redemption and her passion for guiding the next generation, has shaped her calling to walk alongside families so that truth and relationship come together in everyday life.
 
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  James Small

  Medical Doctor and Professor
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Team Members

James Small
Medical Doctor and Professor
James Small, MD, PhD, is a retired pathologist and current Professor of Microbiology at Rocky Vista University College of Osteopathic Medicine. His career spans Duke, the University of Utah, and service as Medical Director of Laboratories at Porter Adventist Hospital in Denver, with research published in the New England Journal of Medicine. Raised in an atheist home, Jim was surprised to discover faith in God and Jesus during his medical training. He’s now active in the Christian Medical and Dental Associations and has served on medical mission trips abroad. Jim and his wife of 44 years have three daughters and five grandsons.
 
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  Lee Holcombe

  Podcast Guest
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Team Members

Lee Holcombe
Podcast Guest
Lee Holcombe is a researcher, educator, and missionary whose career spans engineering, education policy, and international missions. After earning his undergraduate degree in electrical engineering from Rice University, he worked on advanced defense technology before serving in the Peace Corps in Morocco. He went on to earn a doctorate in education from Harvard and served in leadership and research roles at the University of Texas and Texas Higher Education Agency, bridging the worlds of research and policy.
 
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  Megan Carroll

  Podcast Guest
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Team Members

Megan Carroll
Podcast Guest
Megan Carroll For the first 30 years of her life, Megan lived without faith, denying God every chance she could, and chasing her own path. But everything changed when the person she thought would be in her life forever walked away. That’s when she encountered the love of Jesus. Now, about 18 months into her walk with Christ, Megan is on fire for the Lord. She is deeply studying the Bible, growing in truth, and learning to seek God in every area of her life. Pre-Jesus, Megan lived for herself. Today, she lives to glorify Him.
 
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  Olivier Bonnassies

  Engineer, Entrepreneur, and Author
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Team Members

Olivier Bonnassies
Engineer, Entrepreneur, and Author
Olivier Bonnassies is a French engineer, entrepreneur, and author with a background in both science and theology. Educated at the prestigious École Polytechnique in Paris, he spent years building successful companies before turning his attention to life’s deepest questions. Once an agnostic, convinced that belief in God was irrational, Olivier embarked on a personal investigation that led him to faith in Christ. He is co-author, with Michel-Yves Bolloré, of God, the Science, the Evidence: The Dawn of a Revolution, a bestselling book in Europe (over 400,000 copies sold) now launching in the U.S. Through his research and writing, Olivier argues that the convergence of science, philosophy, and history reveals a compelling case for God’s existence.
 
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  Heather Tomlinson

  Journalist
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Team Members

Heather Tomlinson
Journalist
Heather Tomlinson is a British journalist and writer who spent much of her career working for national newspapers in the UK, including The Guardian. Trained in molecular biology, she began her career reporting on science and technology before moving into psychology and mental health. A one-time secular liberal, Heather’s pursuit of truth led her through science, politics, and spirituality until she found the love and reality of Jesus Christ. Today, she writes for Christian publications and serves in pastoral care, helping others discover faith and healing through God’s love.
 
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  Stephen Iacoboni

  Oncologist, Speaker & Author
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Team Members

Stephen Iacoboni
Oncologist, Speaker & Author
Stephen Iacoboni, MD, is a veteran oncologist, author, and speaker whose medical career spans more than forty years. Trained during an era dominated by scientific materialism, he once embraced an atheistic worldview. But through decades of walking with cancer patients in their deepest suffering, he rediscovered the reality of the human soul and the hope of faith. He is the author of The Undying Soul: A Cancer Doctor’s Discovery and Telos: The Scientific Basis for a Life of Purpose, where he shares both his personal journey from atheism to faith and his case for meaning and design in life. Today, Dr. Iacoboni continues to write and speak on the intersection of science, medicine, and spirituality, encouraging both doctors and skeptics to see beyond a purely mechanistic view of life.
 
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  Caleb Ball

  Podcast Guest
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Team Members

Caleb Ball
Podcast Guest
Caleb Ball is a former atheist turned passionate Christian communicator. Once a vocal critic of Christianity, known online as “Crazy Caleb” during his atheist YouTube years, he now uses his platform to share testimonies of skeptics who found faith in Jesus. Through his YouTube channel Aspiring Christian, he curates conversion stories and apologetics content to help others wrestle honestly with life’s biggest questions. Caleb holds a degree in history and is pursuing a Master’s in Biblical Studies at Colorado Christian University. He and his wife live in Montana, where they are active in their local church and community.
 
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  Jason Holloway

  Creative & Strategy Director in Marketing, Podcast Co-Host
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Team Members

Jason Holloway
Creative & Strategy Director in Marketing, Podcast Co-Host
Jason Holloway is a creative and strategy director in marketing and advertising, and co-host of The Boundless Bible podcast. Raised in a Christian home, Jason left the faith for over two decades, exploring philosophy, psychology, world religions, and secular worldviews in search of truth. His journey back to Christ was shaped by a deeper reading of Scripture, the influence of faithful Christian men, and the realization that Christianity uniquely offers both ultimate meaning and undeserved grace. Jason now shares his story to encourage skeptics and believers alike to ask hard questions and discover the richness of God’s Word.