Anjeanette "AJ" Roberts

Following an extensive career in research science and teaching, molecular biologist Anjeanette “AJ” Roberts joined Reasons to Believe (RTB) as a visiting scholar in 2015 and, in 2016, became a permanent member of RTB’s scholar team.

As an RTB research scholar, AJ puts her passion for truth to work engaging in science-faith topics such as evolution and design, harmonizing science and Christianity, and a theological perspective on viruses.

She holds a BS in chemistry at the University of Tulsa, a PhD in molecular and cell biology from the University of Pennsylvania, and an MA in Christian apologetics from Biola University.

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Brett Kunkle

As the student impact director at Stand to Reason, Brett Kunkle is passionate about seeing students and adults transformed by the renewing of their minds. A dynamic communicator who engages both heart and mind, Brett speaks to thousands of students and adults at churches, conferences, and college campuses across the country. After spending 11 years as a pastor to students and young adults at Chino Valley Community Church in Southern California and Creekside Church in Colorado, Brett now orchestrates interactive trips to Berkeley, California; Boulder, Colorado; and various parts of Utah where participants are equipped to engage atheists, Mormons, university students, and other nonbelievers.

Brett has participated in debates and public forums on secular university campuses, and he is a regular speaker at the Evangelical Philosophical Society’s annual apologetics conference. In addition, Brett contributed to the HCSB Apologetics Study Bible for Students, wrote a chapter on truth in Apologetics for a New Generation, and authored The Ambassador’s Guide to Mormonism. He has been interviewed on radio and television and has been a guest host for Stand to Reason’s weekly radio show. He received his bachelor’s degree in Christian education from Biola University and his master’s degree in philosophy of religion and ethics from Talbot School of Theology.

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Craig Hazen

Craig J. Hazen is a professor of comparative religion and Christian apologetics at Biola University and founder and director of the Christian Apologetics Program. For nearly twenty years he has been the editor of the philosophy journal Philosophia Christi, one of the top philosophy of religion journals in the world. He has authored or contributed to a range of scholarly works including To Everyone an Answer, Apologetics Study Bible, and the breakout novel Five Sacred Crossings.

Hazen holds a PhD in religious studies, a degree in biological sciences, and has studied international law and human rights in Strasbourg, France. At Biola he was named the winner of the Fischer Award for Faculty Excellence, the highest faculty honor. Professor Hazen has lectured all over North America and Europe on the evidence for the resurrection, religion and science, and Christianity among world religions. He has also lectured multiple times on Capitol Hill and in the White House. He is a former co-host of a national radio talk program and a regular on-camera expert for broadcast television. He and his wife, Karen, live in Southern California and have four adult children.

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Hugh Ross

Hugh Ross is an astronomer and founder and president of Reasons to Believe, an organization dedicated to demonstrating the compatibility of science and Christianity. Hugh earned a BS in physics from the University of British Columbia and an MS and PhD in astronomy from the University of Toronto.

For several years, he continued his research on quasars and galaxies as a postdoctoral fellow at the California Institute of Technology. While in college, he dedicated himself to faith in Christ following an in-depth study of Scripture that convinced him of the Bible’s factual accuracy.

Prompted by family, friends, and colleagues, Hugh founded Reasons to Believe in 1986, to bring scientific evidence for Christianity to light. Today, Hugh is the author of multiple books—including Improbable Planet, Navigating Genesis, and Why the Universe Is the Way It Is—and speaks on science-faith issues to audiences around the world.

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Jeff Zweerink

Astrophysicist Jeff Zweerink is a research scholar and the executive director of online learning at Reasons to Believe (RTB). He earned a BS in physics and a PhD in astrophysics from Iowa State University, with a focus on gamma rays. Jeff was also involved in research projects such as the Solar Two Project and the Whipple Collaboration and is coauthor of over 30 academic papers.

Having once struggled with reconciling his love of science with his Christian faith, Jeff’s involvement in apologetics grows from his desire to help others bridge the perceived science-faith gap. Today, Jeff writes and speaks on the compatibility of faith and science and on evidence for a Creator from exoplanet research and the multiverse theory. He authored Who’s Afraid of the Multiverse? and coauthored RTB’s Impact Events study guide series for students. Jeff also works on GAPS, a balloon experiment seeking to detect dark matter, at UCLA.

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Jonathan Morrow

Jonathan Morrow (DMin, MDiv, MA) is a sought-after speaker and teacher who has a gift for explaining challenging topics in ways the rest of us can understand. He is the author of several books including Welcome to College: A Christ-Follower’s Guide for the Journey and Questioning the Bible: 11 Major Challenges to the Bible’s Authority, and is an adjunct professor of apologetics at Biola University. He also contributed to the Apologetics Study Bible for Students.

As the director of cultural engagement for Impact 360 Institute, Jonathan trains high school and college students in their 2-week summer Impact 360 Immersion experience and 9-month Gap Year experience. Jonathan speaks nationally on worldview, apologetics, and culture and is passionate about seeing a new generation of Christ-followers understand why they believe and what they believe.

Visit him online at

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Kenneth Samples

Philosopher and theologian Kenneth Richard Samples is senior research scholar at Reasons to Believe. Kenneth earned a BA in social science with an emphasis in history and philosophy from Concordia University and an MA in theological studies from Talbot School of Theology. A search for answers to life’s “big” questions led Kenneth to embrace Christianity as a young man and resulted in a passion to help others understand the reasonableness and relevance of Christianity’s truth claims.

Kenneth worked for seven years as senior research consultant and correspondence editor at Christian Research Institute, where he regularly cohosted The Bible Answer Man with renowned apologist Dr. Walter Martin. Today, Kenneth is the author of several books—including God among Sages (2017) and 7 Truths That Changed the World—and speaks on religion and worldview, the identity of Jesus, and Christian apologetics.

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Michelle Tepper

Michelle Tepper is an itinerant speaker for Ravi Zacharias International Ministries (RZIM), teaching worldwide on a number of subjects, including the problem of pain, God’s character, the dignity of women, and questions about morality, sexuality, and love. She earned her bachelor’s degree in political science from Stetson University, studied abroad at Oxford University, and pursued further theological studies at the Oxford Centre for Christian Apologetics. Prior to joining the RZIM staff, she worked with her husband, Peter, for six years as a university chaplain for St. Aldates, a historic Anglican church located in the heart of Oxford.

Michelle is a passionate foodie, avid runner, mother to the feisty Sophia, and lover of her local church in Central Florida where she ministers with her husband.

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Ramin Parsa

Pastor Ramin Parsa was born and raised as a devout Muslim in Iran. After diligently practicing the religion and suffering under Sharia law, he was disappointed with Islam as his hunger and thirst for God could not be quenched. When Ramin heard the Christian gospel on satellite TV, he committed himself to Jesus and his life was forever changed. Ramin left Iran due to persecution. He lived in Turkey as a refugee and served as a missionary where he was arrested multiple times for spreading the gospel. Shortly after, Ramin came to the United States and attended a Bible college.

He currently serves as the pastor of Good Shepherd Church in Los Angeles and as the president of Redemptive Love Ministries International. Ramin travels the globe and preaches the gospel, encouraging churches with his personal story. He was a TV host for five years and currently has a TV station where he creates Christian programs in order to reach out to the Muslim world. Ramin sees himself as a missionary to America where he feels the calling to awaken and help revive the church.

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Sean Mcdowell

Sean McDowell is a gifted communicator with a passion for equipping the church to make a case for the Christian faith. Through humor and stories, Sean imparts hard evidence and logical support for viewing all areas of life through a biblical worldview. Sean is an assistant professor in the Christian Apologetics program at Biola University. 

After graduating summa cum laude from Talbot School of Theology with a double master’s degree in theology and philosophy, Sean earned a PhD in apologetics and worldview studies from Southern Baptist Theological Seminary in 2014.

Sean speaks at churches, universities, and conferences across the United States and abroad. He has spoken for organizations including Focus on the Family, Cru, and the Association of Christian Schools International. Sean has also appeared as a guest on radio shows such as Point of View, Stand to Reason, and The Hugh Hewitt Show

Sean is the author, co-author, or editor of over 15 books including Same-Sex Marriage: A Thoughtful Approach to God’s Design for Marriage, Is God Just a Human Invention?, and Understanding Intelligent Design. Sean has also written multiple books with his father Josh McDowell, including The Unshakable Truth and More Than A Carpenter. Sean has written for several publications, including Decision Magazine, and is also the general editor for Apologetics for a New Generation and The Apologetics Study Bible for Students.

In 2000, Sean married his high school sweetheart, Stephanie. They have three children and live in San Juan Capistrano, California. Sean played college basketball at Biola University and was the captain his senior year on a team that went 30-7. 

See for Sean’s articles, videos, and many other resources.

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