transcendental argument

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The Unbeliever Knows God: Presuppositional Apologetics and Atheism

100_1270-2-2[A]ll men already know God–long before the apologist engages them in conversation–and  cannot avoid having such knowledge… People lack neither information nor evidence… [A]ll men know that God exists… In a crucial sense, all men already are “believers”–even “unbelievers” who will not respond properly by openly professing and living obediently in accordance with the knowledge they have of God. (Greg Bahnsen, Van Til’s Apologetic, 179-180, emphasis his, cited below).

One crucial point of presuppositional apologetics is that even the unbelieving atheist really does know God. All people have knowledge of God. None can turn from it, none can escape it: everyone knows God. This knowledge is not saving knowledge. Instead, it is knowledge which is suppressed. The knowledge is ignored or even reviled. The quote above from the famed presuppositionalist Greg Bahnsen is just one example. C.L. Bolt, a popularizer of presuppositional apologetics, says similarly:

 It is in the things that have been created that God is clearly perceived. This perception is, again, so clear, that people have no excuse. Not only do all of us believe in God, but we know God. (C.L. Bolt, cited below)

What are we to make of this claim? What is the point from the presuppositionalist perspective? The claim is firmly rooted in Paul’s discussion of God’s wrath against evil in Romans 1-2 (see the text at the end of this post). Therefore, it behooves all Christians to reflect upon the notion that God is known to all people. Presuppositional Apologists have done much reflecting on these subjects, and here we shall reflect upon their insights.

galaxy-5-2What is meant by ‘knowledge of God’?

It is important to outline what exactly it is that this knowledge is supposed to be. Greg Bahnsen notes in Van Til’s Apologetic that the claim is, in part, that “[all people/unbelievers] ‘have evidence’ that justifies the belief that [God] exists” (182).

Note that there is an important distinction within presuppositional thought about what this knowledge of God means. John Frame makes it clear that there is a sense in which the unbeliever knows God and yet another sense in which the unbeliever does not know God (Frame, The Doctrine of the Knowledge of God 49, cited below). According to Frame, the unbeliever knows “enough truths about God to be without excuse and may know many more…”; but “unbelievers lack the obedience and friendship with God that is essential to ‘knowledge’ in the fullest biblical sense–the knowledge of the believer” (ibid, 58). Furthermore, the unbeliever, according to Frame, is in a state wherein he fights the truth: the unbeliever denies, ignores, or psychologically represses the truth, among other ways of acknowledging God as the truth (ibid).

Frame also makes clear the reasons why all people know God in at least the limited sense: “God’s covenental presence is with all His works, and therefore it is inescapable… all things are under God’s control, and all knowledge… is a recognition of divine norms for truth. Therefore, in knowing anything, we know God” (18). Frame elaborates: “[B]ecause God is the supremely present one, He is inescapable. God is not shut out by the world… all reality reveals God” (20).

Therefore, this knowledge should be understood as the blatant, obvious awareness of God found in the created order. It is not saving faith or saving knowledge; instead, it is knowledge which holds people culpable for its rejection. All are accountable before God.

df-van-tilThe Implications of the Knowledge of God

The Practical Implications of the Knowledge of God

Of primary importance is the notion that there is no true atheism. Instead, atheism can only be a kind of pragmatic or living atheism: a life lived as though there were no God. All people know that God exists. The eminent Calvinist theologian, William Greenough Thayer Shedd writes, “The only form of atheism in the Bible is practical atheism” (Shedd, Dogmatic Theology Kindle location 5766). This means that people can live as though there were no God, but none can genuinely lack knowledge of God. Atheism is a practical reality, but not a genuine reality. The very basis for a denial of God is grounded on truths which can only be true if God exists. Here is where the distinctiveness of the presuppositional approach to apologetics

Van Til notes, “It is… imperative that the Christian apologist be alert to the fact that the average person to whom he must present the Christian religion for acceptance is a quite different sort of being than he himself thinks he is” (The Defense of the Faith, 92). His meaning is directly applicable to the discussion above. Christian apologists must take into account the fact that the Bible clearly states that those who do not believe in God themselves know God already.

Furthermore, this knowledge of God is of utmost importance. Bahnsen writes, “Our knowledge of God is not just like the rest of our knowledge… The knowledge that all men have of God… provides the framework or foundation for any other knowledge they are able to attain. The knowledge of God is the necessary context for learning anything else” (181). As was hinted at above, without God, there is no knowledge. Even the unbeliever relies upon God for any true beliefs he has. Van Til notes, “our meaning… depends upon God” (63).

Apologetics in Practice

For presuppositionalists, this means that apologetics is reasoning with people who already know and use their knowledge of God to ground whatever knowledge they do have and bringing them to an awareness of their double-standards. They reject God in practice, but accept God in their epistemology. Thus, presuppositional apologists use the transcendental argument: an argument which seeks to show that without God, the things which we take for granted (knowledge, logic, creation, etc.) would not exist.

Can evidentialists use the insights of presuppositionalists here as well? It seems they must; for the Bible does clearly state that everyone knows God. However, the way evidentialists may incorporate this insight is by using an evidential approach to bring the unbeliever into an awareness of the knowledge they are rejecting in practice. Thus, a cosmological argument might be offered in order to bring the unbeliever into an awareness that their assumptions about the universe can only be grounded in a creator.


We have seen that presuppositional apologetists makes use of the knowledge of God attested in all people by Romans 1 in order to draw out a broadly presuppositional approach to apologetics. I have also given some insight into how evidentialists might use this approach in their own apologetic. We have seen that the core of this argument is that all people know God. Therefore, there are no true atheists; only practical atheists. All true knowledge must be grounded on the fact of God. There are none with an excuse to offer before God at judgment. God’s existence is clear. The unebeliever knows God.

I end with the Biblical statement on the state of the knowledge of the unbeliever, as written by Paul in Romans 1:

The wrath of God is being revealed from heaven against all the godlessness and wickedness of people, who suppress the truth by their wickedness, since what may be known about God is plain to them, because God has made it plain to them. For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that people are without excuse.

For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened. Although they claimed to be wise, they became fools…


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Unbeliever’s suppression of the truth-A brief overview of the notion that unbelievers are suppressing the truth from a presuppositional perspective.

The Presuppositional Apologetic of Cornelius Van Til– I analyze the apologetic approach of Cornelius Van Til, largely recognized as the founder of the presuppositional school of apologetics.

Choosing Hats– A fantastic resource for learning about presuppostional apologetics.


C.L. Bolt, “An Informal Introduction to Covenant Apologetics: Part 10 – Unbeliever’s knowledge of God.

Greg Bahnsen, Van Til’s Apologetic (Phillipsburg, NJ: P&R Publishing, 1998).

John Frame, The Doctrine of the Knowledge of God (Phillipsburg, NJ: P&R Publishing, 1987).

Cornelius Van Til, The Defense of the Faith (4th edition, Phillipsburg, NJ: P&R Publishing, 2008).

Shedd Dogmatic Theology (3rd edition, Phillipsburg, NJ: P&R Publishing, 2003).



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Debate Review: Greg Bahnsen vs. Gordon Stein

Advocates of the presuppositional approach to Christian Apologetics have long hailed the debate between Greg Bahnsen (the late Christian theologian and apologist, noted for his achievements in presuppositional apologetics and development of theonomy–a view of the Law for Christians, pictured left) and Gordon Stein (the late secularist noted for his links to Free Inquiry among other things, pictured below, right) as a stirring triumph of presuppositional apologetics over atheism in a point-by-point debate. Recently, I listened to the debate and thought I would share my impressions here.

Debate Outline

Bahnsen Opening Statement

From the outset, it was clear this debate was going to be different from others I’d listened to or watched. Bahnsen outlined what he means by “God,” outlined a few general points about subjectivism, and then quickly dove into a presuppositional type of argument. He began with an attack on the idea that all existential questions can be answered in the same way:

The assumption that all existence claims are questions about matters of fact, the assumption that all of these are answered in the very same way is not only over simplified and misleading, it is simply mistaken. The existence, factuality or reality of different kinds of things is not established or disconfirmed in the same way in every case. [All quotes from the transcript linked below. My thanks to “The Domain for Truth” for linking this.]

Bahnsen then mounts an argument which is perhaps the most important innovation of presuppositional apologetics: the attack on neutrality. He notes that Gordon Stein in his writings puts forth a case for examining evidence in order to determine if God exists. He relies upon the laws of logic and seems to think that this avoids logical fallacies. Yet, Bahnsen argues, Stein has just argued in a circle as well. By presupposing the validity of the laws of logic and other forms of reasoning, he has fallen into the trap he has stated he is trying to avoid. As such, Stein’s outlook is not neutral but it is colored by his presuppositions. Bahnsen notes:

In advance, you see, Dr. Stein is committed to disallowing any theistic interpretation of
nature, history or experience. What he seems to overlook is that this is just as much begging the question on his own part as it is on the part of the theists who appeal to such evidence. He has not at all proven by empirical observation and logic his pre commitment to Naturalism. He has assumed it in advance, accepting and rejecting all further factual claims in terms of that controlling and unproved assumption.

Now the theist does the very same thing, don’t get me wrong. When certain empirical
evidences are put forth as likely disproving the existence of God, the theist regiments his
commitments in terms of his presuppositions, as well.

Therefore, what Bahnsen presses is that it is only on the Christian theistic presupposition that things like the laws of logic, the success of empirical sciences, and the like can make sense. He makes the transcendental argument for the existence of God:

we can prove the existence of God from the impossibility of the contrary. The transcendental proof for God’s existence is that without Him it is impossible to prove anything.

Gordon Stein Opening Statement

Stein opens by clarifying what he means by “atheist”: “Atheists do not say that they can prove there is no God. Also, an atheist is not someone who denies there is a God. Rather, an atheist says that he has examined the proofs that are offered by the theists, and finds them inadequate.”

Stein then argues that the burden of proof is definitely in the theist’s court. He goes on to address a number of theistic proofs and finds them wanting. In fact, the rest of his opening statement is spent addressing 11 separate arguments for the existence of God, including the major players like the moral, cosmological, and teleological arguments.

Cross Examination 1

In the first cross-examination, Bahnsen asked Stein whether the laws of logic were material or immaterial. Stein finally, quietly, admits that the laws of logic are not material. Yet then Stein turns around and in his own cross examination presses triumphantly a point he thinks will be decisive. He asks Bahnsen, “Is God material or immaterial”; Bahnsen responds, “Immaterial.”; after a brief segway, Stein poses the following question which, by the tone of his voice, he seems to think carries some weight: “Apart from God, can you name me one other thing that is immaterial?” To this question, Bahnsen responds quickly, “The laws of logic.” The crowd erupts. Stein lost that one.

First Rebuttal: Bahnsen

Bahnsen spends most of his rebuttal arguing that the laws of logic are not mere conventions, and that Stein cannot make them such. If Stein does, then, argues Bahnsen, he can’t actually participate in a logical debate, because they could each declare a convention in which they each win the debate.

He goes on to re-stress the transcendental argument and point out that Stein failed to address it. He develops it a bit further by attacking the notion that an atheistic worldview can make sense of logic:

And that’s because in the atheistic world you cannot justify,you cannot account for, laws in general: the laws of thought in particular, laws of nature,cannot account for human life, from the fact that it’s more than electrochemical complexesin depth, and the fact that it’s more than an accident. That is to say, in the atheist conceptionof the world, there’s really no reason to debate; because in the end, as Dr. Stein has said, allthese laws are conventional. All these laws are not really law-like in their nature, they’re just,well, if you’re an atheist and materialist, you’d have to say they’re just something that happensinside the brain.

But you see, what happens inside your brain is not what happens inside my brain.

Stein First Rebuttal

Stein argues that laws of logic are indeed conventions, saying:

The laws of logic are also consensuses based on observations. The fact that they can predict something correctly shows they’re on the right track, they’re corresponding to reality in some way.

Oddly, Stein continues to act as though Bahsnen’s argument was a variety of cosmological argument. He argues that before we can ask “what caused the universe” we must ask whether the universe is actually caused. He then tries to address the argument more explicitly, saying that it is “nonsense” and that various cultures do indeed have different logic. His most direct argument against the trasncendental argument is that “If matter has properties that it behaves than we have order in the universe, and we have a logical, rational universe without God.”

Debate Segment Two

Stein Opening 2

Stein argues that the problem of evil is an evidential argument against the existence of God. He states that it raises the probability that there is no God. He asserts that there is no physical evidence for God. Stein then argues that God has not provided evidence for his existence, but that He should do so. Finally, he turns to the problem of religious diversity, asking why God would allow other religions if there is only one God.

Bahnsen Opening 2

Bahnsen argues that Stein placing the laws of logic into a matter of consensus undermines their usefulness and in fact  defeats the purpose of rational inquiry and debate. He argues further that Stein’s definition of laws of logic within pragmatic terms doesn’t come close to the extent of the laws of logic.

Stein Rebuttal

Stein argues that bahnsen hasn’t actually done anything to explain the laws of logic. He argues that simply saying they are the thoughts of God doesn’t mean anything, and that it does nothing to explain them. He therefore argues that Bahnsen fails to provide an adequate explanation for the facts of the universe.

Bahnsen Rebuttal

Bahnsen presses the point that Stein’s entire system is based upon presuppositions which he cannot justify. Induction is undermined in an atheistic worldview because there is no reason to believe that things will continue to happen as they do currently happen. He briefly addresses the problem of evil by saying that within an atheistic universe there simply is no evil, so it makes no sense from Stein’s perspective to press that issue.

Closing Statement: Stein

Stein’s closing statement seems to be more of a rebuttal than anything. He argues that there can be evil defined in an atheistic universe as that which decreases the happiness in people. Yet even this, he says, “We don’t know”–we don’t know that there is evil in an atheistic universe, rather it is a consensus and pragmatically useful.

He argues that we can know about induction because of statistical probability: it is highly improbable that the future will be different from the past because it has been similar in activity to the past for as long as we know.

Closing Statement: Bahnsen

Bahnsen finally presses the transcendental one last time. He argues that while Stein has called it hogwash and useless, he hasn’t actually  responded to it. Bahnsen states that once more the atheistic worldview can’t make sense of itself. For example, saying the future will be like the past due to probability begs the question: there is nothing in the atheistic worldview to say that probability can help determine what the future will be like. It might work pragmatically, but it fails to give any explanation. Finally, Bahnsen argues that you cannot be a rational, empirical human being an an atheistic universe.

Analysis of the Debate

It is abundantly clear throughout this debate that the presuppositionalist takes a very different approach to debate and apologetics than those from other methods. One can see this immediately when Gordon Stein delivers his opening statement, which was presumably prepared beforehand, and goes to answer common theistic arguments like the cosmological and teleological argument. But Bahnsen never once used either of these arguments, and took an entirely different approach. I think this initially caught Stein off guard and that impression remained throughout the debate.

Stein’s responses to Bahnsen were extremely inadequate. This became very clear in their debate over induction and empiricism. For example, although Stein held that he could say the future will be like the past based upon probability, he had no way to say that the world was not spontaneously created 5 minutes ago with implanted memories and the notion that the future will be like the past. Bahnsen didn’t make this argument, but it seems like it would line up with his reasoning. Of course, he would grant that the theist has to presuppose that God exists in order to make sense of induction, but that was exactly his point: without God, nothing can be rational.

I found it really interesting that Stein kept insisting that the laws of logic are mere social conventions. He kept pressing that some cultures do not hold that they are true as defined. But of course, cultural disagreement about a concept doesn’t undermine the truth value of a concept. If, for example, there were a culture that insisted that 2+2=5, that wouldn’t somehow mean that 2+2=4 is a logical convention, it would mean the culture who insisted the sum was 5 would be wrong. Similarly, the laws of logic may be disagreed upon by some, but to deny them is to undermine all rationality.

Overall, I have to say I was shocked by how this debate turned out. I have long been investigating presuppositional apologetics and continually wondered how it would work in an applied situation. It seems to me that to insist on a presupposition in order to debate would not work, but Bahnsen masterfully used the transcendental argument to reduce Stein to having to argue that logic is merely a social convention while ironically using logic himself to attack theism.

It seems to me that this debate showed what I have suspected for some time: presuppositional apologetics is extremely powerful, when used correctly. Now I’m not about to become a full-blown presuppositionalist here. My point is that it is another approach Christians can use in their witnessing to those who do not believe. I envision a synthesis of presuppositional apologetics with evidentialism. Some may say this is impossible, that they are anathema to each other, but I do not think so. They can be used in tandem: the presuppositional approach to question the worldview of others, while the evidentialist approach can be used to support the notion that the Christian worldview provides the best explanation for the data we have.


Listen to the debate yourself. Get it here. The transcript I used was also from this page. Thanks to the author for such a great resource.

I’ve been researching and writing about presuppositional apologetics. For other posts about presuppositional apologetics, check out the category.

I highly recommend starting with the introduction to the most important thinker in the area, Cornelius Van Til.

Choosing Hats– A phenomenal site which updates fairly regularly with posts from a presuppositional approach (the author uses the term “covenental apologetics”). The best place to start is with the post series and the “Intro to Covenental Apologetics” posts.

The Domain for Truth– Another great presuppositionalist web site. I highly recommend browsing the topics here.



The preceding post is the property of J.W. Wartick (apart from citations, which are the property of their respective owners) and should not be reproduced in part or in whole without the expressed consent of the author. All content on this site is the property of J.W. Wartick and is made available for individual and personal usage. If you cite from these documents, whether for personal or professional purposes, please give appropriate citation with both the name of the author (J.W. Wartick) and a link to the original URL. If you’d like to repost a post, you may do so, provided you show less than half of the original post on your own site and link to the original post for the rest. You must also appropriately cite the post as noted above. This blog is protected by Creative Commons licensing. By viewing any part of this site, you are agreeing to this usage policy.

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