Friends or Foes?

One of the more intriguing aspects of the Indiana Jones film trilogy is its focus on religious themes. In the third installment, Indiana Jones and the Last Crusade, Indy is involved in a search for the Holy Grail, the cup from which Christ drank at the Last Supper. As the film reaches its climax, Indy must go through three tests in order to reach the Grail. After overcoming the first two obstacles, the final test required Indy to “step out” in faith, even though he was on one side of a cavern that appeared to be thirty feet across, without any visible way to reach the other side. Following the instructions from his father’s diary, Indy stepped into the void, and to his amazement, his foot came down on solid ground. It turned out that there was a bridge across the cavern but because the rocky texture of the bridge perfectly matched the facing wall of the cavern, the bridge was invisible from Indy’s perspective.

According to this scene, and enforced by general opinion, religious faith and human reason are opposites. Indiana Jones simply could not understand how it was possible to reach the Grail without any visible means to do so; the implication is that his decision to step out was a forfeiture of his intellect. This idea that Christian faith is a surrender of our reasoning abilities is a common one in contemporary culture.

For many Christians, the scene that we’ve been discussing is a disturbing one. On the one hand, it is a moment of triumph. It seems to lend credence to the importance of religious faith. Then again, it portrays faith as being a mindless exercise. Indiana Jones is an intellectual college professor who is interested in the Grail primarily as an historical artifact. His leap of faith goes against everything he stands for. This reveals a tension that has existed in the church for centuries. Is faith in Christ a surrender of the intellect? Is godly wisdom in complete opposition to what Scripture calls “worldly wisdom”? There are many who question whether the Christian should even expose himself to teaching that is not consistent with the Word of God. For example, it is a frightening prospect for many Christian parents to consider sending their children off to a secular college where the Christian faith is often ridiculed or condemned. Still others want their children to be challenged by a secular education. They consider it part of the Christian’s missionary mandate to confront secular culture with their very presence. In their mind, the tendency of Christians to separate themselves from secular environments leads to an isolationist mentality that fails to reach the lost for Christ.

As we examine the relationship of faith and reason for the Christian in this discussion, there are several questions to keep in mind. Is there such a thing as Christian philosophy, or is philosophy primarily opposed to theology? Should believers read literature that is not explicitly religious, or should we only read Christian literature? What about secular music or films? How we view the relationship between faith and reason will reveal itself in how we answer these questions. We will try to shed light on these issues as we examine three distinctive positions that have been prominent throughout church history.

Earlier, we mentioned that in the popular film, Indiana Jones and the Last Crusade, Indy had to make a literal leap of faith. When he stepped into the “void” in order to reach the Grail, he was unable to see the pathway to the Grail, but his “blind faith” was rewarded when it turned out that the pathway was hidden by an optical illusion. He did what most people would consider suicidal. But is this a true picture of religious faith? Is faith or religious belief irrational? In the next section we will look at the answer of Tertullian, a Christian apologist from the early church who has been accused of saying this very thing.

Tertullian’s Dilemma

Tertullian was a lawyer who converted to Christ sometime around the year A.D. 197. It was he who asked the famous questions, “What does Athens have to do with Jerusalem? What have heretics to do with Christians?” Tertullian’s major distinction was to create a metaphorical contrast between Athens, the home of pagan Greek philosophy, and Jerusalem, the central locale of divine revelation. Tertullian was convinced that the Christian faith and human wisdom were polar opposites. It was his conviction that God had revealed His plan of salvation in Scripture alone; to mix Scripture with the philosophy of pagans could only distort God’s message. But does this mean that Tertullian believed that human wisdom is irrational? Let’s look at the evidence.

Contemporary theologians who deny the rationality of Christian belief often quote Tertullian’s statement that the crucifixion should be believed because it is absurd. He also said the fact of the Resurrection is certain because it is impossible. But these statements must be understood from the context of Tertullian’s own life and work. He himself utilized elements of Greek philosophy and logic that he believed to be compatible with Christian belief. The major emphasis in his writings was to contrast the coherence of Christianity with the inconsistency of his heretical opponents. When he does speak of the absurdity of Christian belief, he is actually referring to the unlikelihood that any human mind could conceive of God’s redemptive plan. Like C. S. Lewis, he was convinced of the truth of the gospel by the very fact that no human being could possibly concoct such a story as is presented in Scripture. Certainly the Jews could not; the claim of Christ that He was God in the flesh was blasphemous to many of them. Nor could the Greeks create such a story; for them, the material world was inferior to the divine realm. God could not possibly assume human flesh in their philosophical reasoning. But for Tertullian, this was compelling evidence that the gospel is true! The religious and philosophical systems contemporary with the advent of Christianity would have prevented any human from simply making up such a fantastic tale. He concluded that the gospel had to originate in the mind of God himself.

To conclude, let’s put Tertullian in the shoes of Indiana Jones. What would Tertullian do if faced with the prospect of crossing over the invisible bridge? My guess is that he would see such a step as consistent with God’s way of directing His people. The key to understanding Tertullian’s view of faith and reason is to consider what the unbeliever would think. Since most unbelievers would consider what Indiana Jones did as unreasonable, he would probably consider such an attitude as compelling proof that the person of faith must take such a step.

Tertullian, the early church apologist, was convinced that belief in the Scripture was the basis for the Christian life. He also considered Greek philosophy to be the basis for heresy in the Church. Unfortunately, he seemed to assume that all Christians intuitively understood Scripture in the same way. His motto might have been “God said it, I believe it, that settles it.” But it is one thing to believe; it is another thing to understand what we believe. Next, we will consider the ideas of Augustine, who is known by the phrase “faith seeking understanding.”

Augustine’s Solution

Augustine, who died in the year A.D. 430, recounts in his famous Confessions how as a young man he was constantly seeking for a philosophy that would be consistent and guide him to truth. At one point he abandoned any hope in his search and became a skeptic. But at the age of 33, Augustine came to accept the truth of the gospel. He recognized that the speculation of Greek philosophy was incapable in itself of bringing him to salvation. But, on the other hand, he could see that it had prepared him to distinguish between truth and falsehood, and laid the groundwork by which he came to accept the claims of Christ. Augustine believed that the Scripture was the authoritative Word of God, but in interpreting difficult scriptural concepts such as the Trinity, he found it necessary to utilize his own philosophical training to explain the teaching of Scripture.

Whereas Tertullian considered faith in Christ’s revelation of himself to be the only thing worth knowing, Augustine emphasized both the priority of faith and its incompleteness without the help of reason. One of his great insights is that faith is the foundation for all knowledge. Christians are often ridiculed for their faith, as if “faith” and “gullibility” were synonyms. But Augustine reminds us that each of us must trust some authority when making any truth claim, and that “faith” and “trust” are synonyms.

Consider a few examples: Christians and non-Christians alike agree that water freezes at zero degrees centigrade. However, I myself have never performed that experiment; I simply trust what reliable scientific studies have confirmed. Likewise, no one living today was present at the signing of the Declaration of Independence, but all Americans celebrate that day as having been July 4, 1776. We trust the witness of those who were actually there. In other words, our knowledge begins with faith in some authority, just as Augustine emphasized.

But Augustine distinguished himself from Tertullian by acknowledging that philosophy does have a role in how the Christian understands God’s revelation. Because humanity is made in the image of God, we are all capable of knowing truth. Augustine found in pagan philosophy helpful ideas that enabled him to elaborate God’s Word. But it must be emphasized that his interest in pagan philosophy was not an end it itself, but rather a tool by which to grasp more deeply the meaning of Scripture.

What would Augustine have done if he had faced the choice of Indiana Jones? First, he would have needed scriptural support for such a choice. Secondly, he would have considered the logic of such a decision. Whereas Tertullian considered God’s mind to be contrary to the philosophies of man, Augustine believed God created us to think His thoughts after Him. His was a reasonable faith. This is why his motto has been described as “faith seeking understanding.”

The Synthesis of Thomas Aquinas

Now we turn to look at the teaching of the twelfth-century scholar Thomas Aquinas, whose own slogan has been called, “I understand in order to believe.”

A good way to get a handle on Thomas’s position is to recognize that his own motto is a reversal of Augustine’s faith seeking understanding. It was Augustine who first explained the concept of original sin, which states that we are alienated from God at birth because we have inherited a sin nature from Adam. Thomas agreed that our moral conformity to God had been lost, but he believed that sin had not completely corrupted our intellect. Thomas believed, therefore, that we could come to a basic knowledge of God without any special revelation. This is not to say that Thomas did not hold a high view of Scripture. Scripture was authoritative for Thomas. But he seemed to believe that divine revelation is a fuller explanation of what we are able to know about God on our own. For example, his attempts to prove the existence of God were based on the aftereffects of God’s action in the world, such as the creation, rather than in the sure Word of Scripture. In contrast to Tertullian and Augustine, who placed faith in God’s revelation of Christ as the foundation for knowledge, Thomas started with human reason and philosophy. His hope was to show that even people who reject the Scripture could come to believe in God through the use of their intellects. But the Scriptures were necessary since the human mind cannot even conceive of concepts such as the Trinity.

Thomas lived at a time when most of Aristotle’s philosophy was first being introduced into the Latin language. This created quite a stir in the universities of the day. Up until that time, Augustine’s emphasis on an education centered on Scripture was the dominant view. Thomas himself was educated in the tradition of Augustine, but he appreciated the philosophy of Aristotle as a witness to the truth. He found Aristotle to be more balanced in his approach to philosophy than Augustine had been. Whereas Augustine emphasized the eternal realm in his own philosophy, Aristotle’s philosophy confirmed the importance of the natural world as well and assisted Thomas in his effort to create a comprehensive Christian philosophy which recognized that the material world was important because it had been created by God and was the arena in which His redemptive plan was to be fulfilled. Prior to Thomas, the tendency had been to downplay the physical world as greatly inferior to the spiritual world.

If we were to place Thomas in the shoes of Indiana Jones, it is likely that he would have stepped out as well. But he would have arrived at the decision for different reasons than Tertullian or Augustine. Because of his emphasis on the thinking ability of the human race and his emphasis on physical reality, he might have knelt down on the ground and felt for the hidden pathway before actually stepping out. Since he leaned toward utilizing reason and his own understanding to discover the bridge, he would not have depended solely on revelation to cross over like the others.

We will conclude our series as we evaluate the implications of the three different views of faith and reason that we have been examining in this discussion.


We have been examining three distinctive positions on the question of faith and reason. Basically, we have been attempting to discern whether or not human reason, as expressed in pagan philosophy, is a help or a hindrance to Christian theology.

The first position we addressed was that of Tertullian, who viewed the combination of divine revelation and Greek philosophy as the root of all false teaching in the church. We then showed that even though Augustine agreed with Tertullian that faith in divine revelation is primary for the Christian, they differed in that Tertullian emphasized belief in the Scriptures, while Augustine focused on the understanding of what one believes. That is why he was willing to incorporate pagan philosophy to help further his understanding of Christian theology. He was delighted to find pagans whose philosophy, though not Christian in and of itself, was in some way compatible with Christianity.

The third and final position we examined was that of Thomas Aquinas, who believed that all people could have a basic knowledge of God purely through natural reason. He did not agree with Augustine that the human mind had been totally corrupted by sin at the Fall. This belief led to his elevation of the power of the mind and his appreciation of philosophy. Theology is the higher form of wisdom, but it needs the tools of science and philosophy in order to practice its own trade. Theology learns from philosophy, because ultimately theology is a human task.

How we view the relationship between faith and reason can have powerful implications for how the Christian engages society with the gospel. One of the problems with the apologetics of Tertullian is that he seemed to view all that opposed him to be enemies of the gospel, rather than as potential converts. This is in stark contrast to the behavior of the Apostle Paul in Acts 17, when he proclaimed the gospel among the Greeks at Mars Hill. He did not condemn them for their initial failure to accept the Resurrection. Instead, he attempted to reach common ground with them by quoting some of their own philosophers, picking out isolated statements from pagan thinkers which were consistent with Scripture, while still maintaining the absolute truth of Scripture as his foundation. In this way, he was able to gain a hearing with some of his listeners. But this presupposes some familiarity with pagan thought. This familiarity made Paul a more effective witness to his audience.

Paul’s attitude toward pagan philosophy seems to be consistent with those of Augustine and Aquinas. All three felt it was beneficial to know what the non-believer thought in order to communicate the gospel. How then can believers apply this attitude today without compromising their values? Perhaps it involves Christian parents listening with their children to the music they enjoy, and then constructively discussing its message. After all, many contemporary musicians utilize their music to proclaim their own philosophies of life. Or maybe it will mean watching a popular movie that has taken the country by storm, with the goal of discerning its importance to the average viewer. Rather than criticizing literature, philosophy, film, or music that is not explicitly Christian, we may find that by attempting to appreciate their value or worth, no matter how meager, we may be better able to dialogue with, and confront, our post-Christian culture with the claims of Christ.

© 1998 Probe Ministries.

Tim Garrett is a former research associate with Probe Ministries. He has a B.A. in religion from George Fox University and an M.A. in the philosophy of religion from Denver Seminary. He served as a youth pastor for several years while in seminary.

What is Probe?

Probe Ministries is a non-profit ministry whose mission is to assist the church in renewing the minds of believers with a Christian worldview and to equip the church to engage the world for Christ. Probe fulfills this mission through our Mind Games conferences for youth and adults, our 3-minute daily radio program, and our extensive Web site at

Further information about Probe's materials and ministry may be obtained by contacting us at:

Probe Ministries
2001 W. Plano Parkway, Suite 2000
Plano TX 75075
(972) 941-4565
[email protected]

Copyright/Reproduction Limitations

This document is the sole property of Probe Ministries. It may not be altered or edited in any way. Permission is granted to use in digital or printed form so long as it is circulated without charge, and in its entirety. This document may not be repackaged in any form for sale or resale. All reproductions of this document must contain the copyright notice (i.e., Copyright 2024 Probe Ministries) and this Copyright/Limitations notice.

©2024 Probe Ministries | Designed and Managed by Adquest Creative


We're not around right now. But you can send us an email and we'll get back to you, asap.


Discover more from Probe Ministries

Subscribe now to keep reading and get access to the full archive.

Continue reading

Log in with your credentials

Forgot your details?