Category Archives: Apologetics

Twelve Points that Show Christianity is True (Arabic)

To download the Arabic translation of The Twelve Points that Show Christianity is True by Norman L. Geisler, click here. The download is a .zip file of a .pdf file. NGIM has given its permission to allow this PDF file to be downloaded freely and distributed freely, so long as no changes are made. We encourage you to send the link to this page ( all the Arabic readers you know!

Click the graphic above to download the zipped PDF version of this book freely.

This translation was made by a native Arabic speaking Christian from Syria and checked by a native Arabic speaking Christian in Egypt.

Read more about the original English version of this book here.

Philosophy of Religion

by Norman L. Geisler and Winfreid Corduan

As of January 2022, Bastion Books is actively discussing the possibility of creating a slightly-expanded 3rd edition with the help of Winfried Corduan! For now, however, the second edition is available for sale in softcover and e-book formats through Wipf&Stock.

  • Is there any basis in reality for a religious experience?
  • Is there any basis in reason for belief in God?
  • Is it even possible to speak meaningfully of a transcendent being?
  • And how does one account for evil?

The authors answer these questions, representing the four most important issues in the philosophy of religion, in a comprehensive way and “from the perspective of classical theism.” They support this position with in-depth argumentation, taking into account both classical and contemporary writers. With its well-outlined text, ‘Philosophy of Religion’ is “user friendly.” An introduction, chapter summaries, a glossary, indexes, and bibliography contribute to this end.

The first edition, written by Norman L. Geisler alone, was published by Zondervan in 1974 and was to some degree an expansion of his Ph.D. Dissertation from 1970. It was chosen as a “Choice Evangelical Book of the Year” by Christianity Today (1975). 

The second edition was expanded by Winfried Corduan (in concert with Norm) and published by Baker Books in 1988. In this second edition, the authors have not only updated the text and bibliography, but also refined some of the arguments, “scaled down and evened out” the vocabulary, and added several pedagogical aids.

As of 2022, Bastion Books has the rights to the book and hopes to work with Winfried Corduan to make a slightly-expanded, updated, third-edition of this book.

Beware of Philosophy

Beware of Philosophy: A Warning to Biblical Scholars

by Dr. Norman L. Geisler

Available as a free .PDF file here.

Beware of Philosophy began as the presidential address Dr. Geisler delivered to the biblical scholars at the 50th annual meeting of the Evangelical Theological Society (ETS) on November 19th, 1998.  This eBook edition remains essentially the same but was updated slightly by Dr. Geisler in 2012.

Dr. Geisler begins with this warning:

The exhortation of the apostle Paul to “beware of philosophy” (Col. 2:8) is as urgent today as it was in the first century, if not more so. And this is not only true for Christians who call themselves philosophers but for those who do not, especially for biblical exegetes. Although the context of Col. 2:8 probably has reference to a proto-gnostic type philosophy at Colossae that had a disastrous mix of legalism, asceticism, and mysticism with Christianity, the implications of Paul’s exhortation to “beware of philosophy” are appropriately applied to other alien systems of thought that have invaded Christianity down through the centuries since then.

But before one can beware of philosophy, theologians must first be aware of philosophy.  Dr. Geisler begins by explaining the sour theological fruit produced by the incursion of harmful philosophical roots.  He warns against Naturalism, Spinoza, Hume, Bultmann, Agnosticism, Evolutionism, Progressivism, Existentialism, Phenomenology, Conventionalism, Processism, Platonic Allegorism, Ockhamistic Nominalism, Aristotelianism, Anthropological Monism, and Historical Criticism.  He proceeds to offer helpful advice for the mind and for the soul–advice meant to help us avoid being influenced negatively by harmful philosophical trends and methods.  This makes it a “must read” for all biblical scholars and for advanced students of God’s word!

Miracles and the Modern Mind

Miracles and the Modern Mind: A Defense of Biblical Miracles, Revised, Second Edition
by Norman L. Geisler

The first edition of this book (Baker, 1992 and W&S, 2003) is available as a softcover printed book through Wipf&Stock here and is also available as a digital book at here.

Second edition. In 2012, Norm gave this book revision. While it is not available at this time, Bastion Books is working to get it published in 2022 or 2023.



The Religion of the Force (Star Wars)

The Religion of the Force
Revised, Second Edition
by Richard G. Howe
and Norman L. Geisler

Preface ……………………………………………………………… 5
1 | The Star Wars Phenomenon ……………………………. 8
2 | Is There a Religion of the Force? …………………… 12
3 | What is George Lucas’s Religion? …………………. 26
4 | Star Wars and Christianity ……………………………. 31
5 | What is the Source of the Force? …………………… 55
6 | What is the Gospel According to Lucas? ………… 62
7 | What Makes the Difference? …………………………. 66
8 | What Difference Does it Make? …………………….. 74
About the Authors ……………………………………………. 79
How to Know God …………………………………………… 80
Notes ……………………………………………………………… 96

Additional search keywords: Star Wars

Thomas Aquinas: An Evangelical Appraisal

The first edition, titled Thomas Aquinas: An Evangelical Appraisal, was published in 1991 by Baker Book House (ISBN: 978-0801038440) and then republished in 2003 under the same title by Wipf & Stock Publishers (ISBN: 978-1592441549). The first edition is still available as a softcover book from Wipf&Stock here and as an e-book in the Logos system here.

Second Edition. Norm revised the book in 2012 and added two completely new chapters—one on evil and one on the origin, nature, and destiny of human beings. This edition is not available at this time. Bastion Books is working to republish it in 2022 after adding a few new appendices.




1: The Contemporary Relevance of Aquinas.
2: The Life of Aquinas.
3: An Overview of the Thought of Aquinas
4: The Bible
5: Faith and Reason
6: The First Principles of Knowledge
7: Reality
8: God’s Nature
9: God’s Existence
10: Human Nature
11: Religious Language
12: Evil
13: Law and Morality

End Notes
Select Bibliography


1: The Major Writings of Aquinas
2: A Chronology of Aquinas’s Life
3: God, Angels, and Humans
4: Christian History Interview with Norm Geisler about Thomas Aquinas
5: Does Thomism lead to Roman Catholicism?
6: Directions in Neo-Thomism

If you would like to review an advanced pre-view copy of the third edition of the book and provide a recommendation blurb for it, or if you have any constructive criticism of/for the book, please feel free to send it to the editor through our contact page.

Praise for the book

“This is ‘must reading’ for every thinking Christian. I am thrilled by this careful analysis of St. Thomas.”

R.C. Sproul, Emeritus Professor of Theology, Reformed Theological Seminary

“The book gives an understandable presentation of many of Aquinas’ major contributions and shows how they are relevant, at times even crucial, to contemporary discussion. In the process Geisler strikes a credible blow against the current unfounded prejudice towards S. Thomas in evangelical thought.”

Winfried Corduan,Professor Emeritus of Philosophy and Religion, Taylor University

“Dr. Geisler is a man I have known and admired for many years. It is indeed the rare man who can find in an apparent enemy an ally. But Geisler’s study of Thomas Aquinas is far more than an instance of the old adage fas est et ab hoste doceri (it is right to learn even from the foe). He enables evangelicals and Catholics to see the immense range of truths that unite us, not as some least common denominator, but truths that are at the heart of our Christian faith.”

Ralph McInerny, Professor of Philosophy, University of Notre Dame

“Dr. Geisler has hit a grand slam with Thomas Aquinas. This volume makes accessible the many Thomistic nuggets to the evangelical world. Whether you’re a theologian or lay person, this clear and understandable work offers crucial ideas for understanding the Bible, God, creation, reality, the relationship between faith and reason, and much more. This must-read book is an indispensable resource for any thinking Christian’s toolkit. Take and read!” 

Joseph M. Holden, President, Veritas International University

“Geisler makes a good case for his message that the writings of Aquinas can be of great value to today’s Protestant and Roman Catholic philosophers and theologians.”

Robert N. Campbell, Aquinas Scholar

“Paul tells us in Rom. 1:20 that the invisible attributes of God ‘are clearly seen through the things that are made.’ He echoes the Psalmist who tells us that ‘the heavens declare the glory of God’ (Ps. 19:1). No philosopher in history has done a better job of unpacking the philosophical richness of Paul’s and the Psalmist’s proclamations than Thomas Aquinas. Evangelicals who ignore Aquinas’s thinking here and in other areas are doing themselves a great disservice. There is no better place to begin appreciating his philosophy than Dr. Norman Geisler’s excellent book. It should be in the library of every thoughtful Christian.”

Richard G. Howe, Emeritus Professor of Philosophy and Apologetics, Southern Evangelical Seminary

“Thomas Aquinas is arguably the greatest mind Christendom has ever produced. Yet many Christians are unfamiliar with his life and extraordinary accomplishments. Norman Geisler has done a great service for evangelical Protestants by providing them with a general introduction to St. Thomas’s life and system of thought. Old Aquinas has indeed much wisdom to teach all branches of Christendom.”

Kenneth Samples, Senior Research Scholar, Reasons to Believe

“Some may be surprised that a well-known Christian leader, such as Norman Geisler, would propose greater evangelical appreciation of Thomas Aquinas.  But, in fact, reading Aquinas will enrich the evangelical Christian’s theology, philosophy, and apologetics. In this book, Geisler seeks to give a basic explanation of the untapped riches of Thomistic theology and philosophy to the evangelical and to whoever is open to learning it. For this reason, I recommend this book as a beginner’s guide to those who are interested in learning from Aquinas but whose hearts falter at the prospect of having to learn the medieval scholastic literary method.” 

Miguel Angel Endara, Professor of Philosophy and Apologetics, Veritas International University

“Should Old Aquinas Be Forgot? is an astute introduction to the philosophical thought of Aquinas for evangelical thinkers.  The list of topics are extensive: faith and reason, religious language, Aquinas on the Bible, reasoning for God’s existence and nature, natural law, the human person.  Its abundant citations acquaint the reader with Aquinas himself and open the door to deeper dimensions of his metaphysical thought.”

John F. X. Knasas, Emeritus Professor of Philosophy at the Center for Thomistic Studies at the University of St. Thomas in Houston

“Evangelicals must stop thinking of the medieval period as the long dark time between Augustine and Luther. Geisler’s critical but charitable engagement with Aquinas’ writings provides a helpful introduction to overturning some common misunderstandings about Thomas’ philosophy and offers an invitation to further study in the period.”

John R. Gilhooly, Assistant Professor of Philosophy and Theology and Director of the Honors Program, Cedarville University

“Should old Aquinas be forgot? Absolutely not. Dr. Geisler presents the importance and relevance of Aquinas with his rare ability to get quickly and succinctly at the heart of Aquinas’ major contributions. I highly recommend this book!”

Thomas W. Baker, Associate Professor of Theology and Apologetics, Veritas International University

“It is with great enthusiasm that I commend Dr. Norm Geisler’s evangelical compendium on the theological genius of Saint Thomas Aquinas. In this book, Dr. Geisler is both conductor and instrumentalist as he directs the concerto on the veritas Dei composed by the humble Dominican Friar. To all who have undergone their own intellectual born-again experience and to all who have yet to discover God’s philosophy: Tolle Lege! (“Take up and read!”) Then you will discover why it is the highest compliment to be called a Thomist.”

Kenny Rhodes, Visiting Scholar, Reasons to Believe

“In the 16th through 19th centuries, many Protestant theologians maintained a critical appreciation of the thought of Thomas Aquinas. Some probably qualify as Reformed Thomists. However, from the early 1800s to the mid-1900s, there was a major shift in Protestant reception of Thomistic thought. Aquinas was either ignored or attacked. In the mid-1900s, however, things began to change. Some Protestant scholars began, once again, interacting positively with Aquinas. In 1957, Norman Geisler argued in an article that there were some very good reasons for a renewed Protestant consideration of the thought of Thomas Aquinas, and, more importantly, Protestants could actually embrace the thought of Aquinas on a number of key issues. This is not a novel claim, but, more accurately, a return to the early Reformed approach to the thought of Aquinas. Protestant interest in the work of Aquinas has since continued to grow, creating a debate concerning how much of Aquinas’s thought Protestants can use without compromising the truths of Scripture that were salvaged during the Reform. This revised version of his 1991 book, which includes helpful additions concerning the noetic effects of sin, pure act and divine simplicity, an entirely new chapter on Aquinas’s approach to human nature, a reworking of his chapter on evil, and some new appendices, is a helpful introduction to the thought of Thomas Aquinas, and deserves a wide readership.”

David Haines, Associate Professor of Philosophy and Religion, Veritas International University

God: A Philosophical Argument from Being

This 29-page booklet contains Norm Geisler’s final articulation of his own unique contribution to the cosmological class of arguments for the existence of God. It’s an argument he developed and refined over sixty years (1956 to 2015). Drawing from pools deeper and more ancient than those used by philosophers in the Age of Enlightenment, he is not trying to rescue any of the standard textbook arguments from their standard textbook criticisms. This is not, for example, a revamping of Leibniz’s famous contingency argument. Instead, he presents an ancient argument with new insights. While unmistakably Thomistic in tone, this is not simply an expansion of Thomas Aquinas’s famous “third way.” Taking his cues from Aquinas’s De Ente et Essentia (On Being and Essence), Geisler pierces to the underlying substrate of Aquinas’s five ways to get to the most fundamental starting point of all—Being itself. In so doing, he forges a new pathway to a largely forgotten frontier where the reason of contingent beings is confronted by that which we call God. The argument is first summarized in a seven-point outline and then expanded into an eighteen-point form. Short expositions for each point are offered and terms are defined. The conclusion only leaves room for the God of classical theism—the God of Gen. 1:1, Ex. 3:14, Acts 17:24-25, Col. 1:17, and Rev. 4:8.

This is available only on Amazon as a 5″x8″ softcover booklet and a Kindle e-book.

12 Points That Show Christianity is True (in Spanish)

Doce Puntos que Muestran la Veracidad del Cristianismo: Un Manual sobre la Defensa de la Fe Cristiana is the Spanish translation of Twelve Points that Show Christianity is True. It is available as a softcover printed book and as a kindle book only through at this time.

We hope to get it into the distribution system soon, but we’re not sure how to do it and we’re not sure when that might happen.  

12 Points that Show Christianity is True (English)

Available as a printed softcover book and as a kindle e-book at Amazon.

Twelve Points that Show Christianity is True: A Handbook for Defending the Christian Faith


by Dr. Norman L. Geisler

This 200 page apologetics eBook a systematic, methodical, step-by-step defense of the Christian Faith in 12 chapters:

  • Chapter 1: Truth About Reality Is Knowable 9
  • Chapter 2:  Opposites Cannot Both be True 13
  • Chapter 3: The Theistic God Exists 21
  • Chapter 4: Miracles are Possible 47
  • Chapter 5: Miracles Can Be Used to Confirm a Message from God 63
  • Chapter 6: The New Testament Documents are Historically Reliable 73
  • Chapter 7:  In The New Testament Documents Jesus Claimed to be God 116
  • Chapter 8: Jesus’ Claim to be God was Confirmed by a Unique Set of Miracles 128
  • Chapter 9: Jesus was Supernaturally Confirmed to be God in Human Flesh 153
  • Chapter 10: Whatever Jesus affirmed IS True, Is True 182
  • Chapter 11: Jesus Affirmed the Bible is the Word of God 190
  • Chapter 12: The Bible is the Word of God and Anything Opposed to It is False 200

This book was the culmination of over sixty years of Norm’s work in the field of classical Christian apologetics.

Additional books, videos, and instructor-led courses on Norm Geisler’s 12-point apologetics system may be available at Norm’s Twelve Points book was originally published through Bastion Books in 2013 but then in 2017 or so, Norm transferred the rights to NGIM to republish it and use it as one of their official books to train budding apologists and evangelists around the world.

This book was translated into Spanish in 2018. More information about it may be found here.

This book was translated into Arabic in 2019 and may be downloaded freely from here.

Cómo Conocer a Dios (Free! Por nada!)

Cómo Conocer a Dios
(Spanish translation of How to Know God)

Click here to download as a free PDF file. 

This is essentially an evangelistic tract. But it spans pre-evangelism, evangelism, and touches on discipleship. It begins by using classical apologetics to help the reader what we should know about God. It then proceeds to use scripture to help the reader know more about God. It then explains how to begin a personal relationship with God. Finally it recommends a few first steps for those who have recently begun to know God and want to know him better.

This is a 19-page booklet in PDF file format.

It is NOT available as a printed booklet at this time.

This is written in Spanish. It is also available in English here.