Dr. Timothy McGrew is Professor and Chairman of the Department of Philosophy at Western Michigan University. A specialist in theory of knowledge, logic, probability theory, and the history and philosophy of science, Dr. McGrew has spoken at Oxford, MIT, and other universities as well as at many churches and seminaries across the United States and overseas. He has also engaged in public debates on the meaning of faith, the rationality of belief in miracles, and the historical reliability of the Gospels.

Dr. McGrew’s publications include papers in MindThe MonistAnalysisErkenntnisBritish Journal for the Philosophy of Science, the article on “Evidence” in The Routledge Companion to Epistemology (Routledge, 2010), co-authorship of The Philosophy of Science: An Historical Anthology (Blackwell, 2009), co-authorship (with Lydia McGrew) of the article on “The Argument from Miracles” in The Blackwell Companion to Natural Theology (2009), and the article on “Miracles” for The Stanford Encyclopedia of Philosophy (2011).

Dr. McGrew is the project director for the Library of Historical Apologetics, the premier online resource connecting contemporary apologists to the apologetic resources of the past. From 2014-16, he was the American director of the Special Divine Action Project, provided for a grant from the John Templeton Foundation on the subject of special divine action. 

Dr. McGrew holds the title of National Master from the United States Chess Federation and won the Michigan Championship in 2006. He and his wife, Lydia McGrew, have been married for over 30 years, and they have three chess-playing daughters.


Sarah R. Enterline is a writer, apologist, pastor’s wife, mother, and teacher. She has undergraduate degrees in Biblical Studies, Christian Studies (Theology and Ministry), Social and Behavioral Science, and Philosophy; a CA State Credential in teaching History; and an M.A. in Christian Leadership. From 2009 – 2016, she was the President of The International Society of Women in Apologetics, and was also a writer and editor on the Special Divine Action Project. She has taught Apologetics, Biblical Studies, Philosophy, and History, at both the secondary and college levels. She also speaks at churches and conferences around the country, and has frequently guested on numerous radio shows and podcasts. Sarah is married to Matt, a Pastor and the Co-Director of Calvary Curriculum, and she is currently homeschooling her 16 year-old son, Lochlann, who has Autism.

Her Heritage of Truth series focuses on women in historical apologetics, and she has published No Apologies: The Life and Work of Susanna Newcome and Digging Deeper: The Life and Work of Mary Brodrick so far, with many more to come. Sarah’s website can be found at



Kyle Huitt is currently a Ph.D. student in philosophy at Baylor, and also a freelance web designer in the Waco area. His interests in apologetics include the origins and transmission of the New Testament documents, the cosmological argument, the problem of evil, and the problem of divine hiddenness. Kyle enjoys using his web design experience to benefit non-profits and apologetics organizations.