Dr. Douglas Groothuis has fire in his bones for the Christian message and many irons in the fire to explain, defend, and apply that message. He has been explaining the world to the church and explaining the church to the world for nearly fifty years through his teaching, preaching, writing, mentoring, and general witness. His passion is to take to the streets the truth and significance of the Christian worldview for all of life. To that end, he publishes both academic and popular works, preaches in churches, gives public lectures, and engages in debates. Since 1983, he has appeared on hundreds of radio programs and podcasts. His students and peers regard him as a knowledgeable, sharp, and forceful yet gentle communicator of the Christian message. 

Dr. Groothuis holds a Ph.D. in Philosophy (University of Oregon, 1993) and in the fall of 2024, became Distinguished University Research Professor of Apologetics and Christian Worldview at Cornerstone University. He is the author of twenty books, beginning with the best-selling Unmasking the New Age (InterVarsity Press, 1986) and including the popular and voluminous textbook, Christian Apologetics, 2nd ed. (IVP Academic, 2022), as well as a poignant memoir, Walking Through Twilight: A Wife’s Illness—a Philosopher’s Lament (InterVarsity, 2017), an introduction to philosophy, Philosophy in Seven Sentences (InterVarsity, 2016), and a bold critique of Critical Race Theory, Fire in the Streets (Salem Books, 2022). He co-authored the introductory textbook on apologetics, The Knowledge of God in the World and in the Word (Zondervan-Academic, 2022) with Andrew Shepardson. His most recent book is World Religions in Seven Sentences (InterVarsity, 2023).

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