Lord, Liar, Lunatic — or Legend? The Argument from the Character of Jesus

The Man Who Would Not Stay in the Box

There is a particular kind of compliment that, on closer inspection, turns out to be impossible to pay. We hear it constantly: Jesus of Nazareth was a great moral teacher — a sage to be ranked with Socrates, Confucius, the Buddha — even if we set aside the supernatural scaffolding the Church later built around him. It is a generous, ecumenical thing to say. It is also, C. S. Lewis insisted, the one thing we cannot coherently say. The compliment will not fit the man. He keeps stepping out of the frame we have built for him.

The argument from Jesus's character begins here, with a tension that the Gospels themselves seem designed to provoke. On the one hand stands a figure of extraordinary moral stature: wise, compassionate, fearless before the powerful and tender toward the broken, and — by the testimony of those who knew him best — without sin. On the other hand stands a set of claims so audacious that, in any other mouth, they would be obscene. The argument asks a simple question: do these two things fit together? And if they do not fit easily, what follows?

The Claim and the Character

Consider first the moral portrait. The earliest Christians, writing within a generation or two of the crucifixion, make a claim about Jesus that they make about no one else and that ancient literature almost never makes about anyone: that he was sinless. Paul writes that God "made him to be sin who knew no sin" (2 Corinthians 5:21). The author of Hebrews describes a high priest "who in every respect has been tempted as we are, yet without sin" (Hebrews 4:15). Peter, drawing on Isaiah's Suffering Servant, says he "committed no sin, neither was deceit found in his mouth" (1 Peter 2:22). And in John's Gospel, Jesus himself throws down a challenge no honest person would dare: "Which one of you convicts me of sin?" (John 8:46).¹ Whatever one makes of the historicity of these texts, the moral verdict they record is striking — and it was rendered not by distant admirers but by Jews steeped in a tradition that insisted all have sinned.

Now set beside this the claims. Jesus forgives sins that were not committed against him (Mark 2:5–7), an act the bystanders rightly recognize as God's prerogative. He places his own words above the Torah — "You have heard that it was said… but I say to you" (Matthew 5:21–22). He declares that the eternal destiny of every human being turns on their response to him (Matthew 10:32–33), and that he will return as the world's judge. In John the claims become explicit: "Before Abraham was, I am" (John 8:58); "I and the Father are one" (John 10:30).

The argument's logic is this: such claims cannot be made innocently. A morally good and mentally sound human being does not go about implying that he is the hinge of history and the rightful object of worship. Either the claims are true, or the man who made them was profoundly dishonest, or he was profoundly deranged — and the second and third options sit very badly indeed with the moral portrait. So the character of Jesus, far from being separable from his claims, becomes evidence about them.

Lewis's Trilemma

The framing was made famous by C. S. Lewis in Mere Christianity, assembled from his wartime BBC radio talks. The passage deserves to be quoted at length, because it is more often paraphrased than read:

"I am trying here to prevent anyone saying the really foolish thing that people often say about Him: 'I'm ready to accept Jesus as a great moral teacher, but I don't accept His claim to be God.' That is the one thing we must not say. A man who was merely a man and said the sort of things Jesus said would not be a great moral teacher. He would either be a lunatic — on the level with the man who says he is a poached egg — or else he would be the Devil of Hell. You must make your choice. Either this man was, and is, the Son of God: or else a madman or something worse… let us not come with any patronising nonsense about His being a great human teacher. He has not left that open to us. He did not intend to."²

This is the "trilemma": Lord, liar, or lunatic. Lewis's point is not that the argument proves the resurrection or the deity of Christ. It is narrower and, on its own terms, sharper: it forecloses the comfortable middle position. You may decide Jesus was a fraud; you may decide he was mad; you may fall at his feet. What you may not do is keep him as a tame ethical sage while quietly discarding the claims that gave his ethics their authority. The character and the claims come as a package, and the package will not be unwrapped.

The Strongest Objection: The Fourth Horn

The trilemma has been criticized almost since the ink dried, and the most serious objection is not that Jesus might have been a liar or a lunatic. It is that there is a fourth option Lewis never named: legend.

The objection runs as follows, and it must be stated at full strength. Lewis's argument assumes that the Gospels accurately report what Jesus said about himself. But the most distinctive and exalted self-claims — "I and the Father are one," "Before Abraham was, I am" — appear overwhelmingly in the Gospel of John, the latest of the four, written perhaps sixty to seventy years after the crucifixion. If those claims are not the words of the historical Jesus but the developed theology of a later community placed on his lips, then the dilemma simply dissolves. Jesus need not have been Lord, liar, or lunatic. He could have been exactly what the skeptic wanted all along: a great moral teacher whose followers, in love and grief and theological reflection, gradually exalted into something more. The trilemma, on this view, is not false because its logic fails but because it rests on a premise — the reliability of the Gospel self-portrait — that it never earns.

The most prominent contemporary advocate of this view is the New Testament scholar Bart D. Ehrman. In How Jesus Became God: The Exaltation of a Jewish Preacher from Galilee (HarperOne, 2014), Ehrman argues that the historical Jesus was an apocalyptic Jewish prophet who did not claim divinity during his lifetime, and that the explicit divine self-claims are concentrated in John precisely because John is late and theologically developed. He presses the point hard: had Jesus actually gone about calling himself God, it is scarcely credible that Matthew, Mark, and Luke would all have failed to mention it.³ This is a fair and forceful challenge, and intellectual honesty requires conceding its core: if the high self-claims are later inventions, the trilemma as a standalone proof collapses.

The Other Two Horns of Critique

Two further objections deserve a hearing before any reply. The first is the guru objection, pressed by philosophers and skeptics alike: the trilemma's "lunatic" horn is a caricature. History is full of people who were morally admirable, mentally functional, sincere — and yet profoundly mistaken, even about themselves. A revered teacher might sincerely believe he had a unique divine vocation and be neither a liar (he means it) nor a clinical lunatic (he is otherwise sane) but simply, tragically, wrong. The trilemma, the critic says, flattens a rich spectrum of human self-deception into three crude boxes.

The second is the circularity objection, and it is the most uncomfortable. The argument leans on the Gospels for both halves of its evidence: it draws the lofty claims from the Gospels and it draws the spotless character from the same Gospels. If those texts are reliable enough to establish the sinlessness, why are they not also reliable enough to establish the deity directly — and if they are not reliable, on what basis do we trust the moral portrait? The argument seems to want to have the Gospels' testimony and discount it at the same time.

Reply, with Concessions

The honest reply begins by granting what is true in each objection — and a great deal is true.

To the legend objection: the concession is real and should not be hurried past. If the divine self-understanding of Jesus is entirely a Johannine overlay, the trilemma does not survive as a proof. But the defender has two genuine responses. The first is that the high claims are not confined to John. The Synoptic Gospels — earlier, and even Ehrman grants them more weight — contain implicit claims of startling magnitude. As N. T. Wright argues across Jesus and the Victory of God and elsewhere, the historical Jesus seems to have acted as though he were doing in person what the Temple did — offering forgiveness, embodying the presence of Israel's God returning to Zion — and to have understood his vocation in terms that strain any ordinary category of prophet or teacher.⁴ The forgiving of sins, the sovereign reinterpretation of the Law, the summons to make him the criterion of judgment: these are in Mark, our earliest Gospel, not just in John. The trilemma's premise does not stand or fall with the Fourth Gospel alone.

The second response concedes the deeper point: the argument's force is genuinely conditional on prior conclusions about Gospel reliability. This is not a defeat; it is a clarification of what kind of argument this is. It is not a freestanding proof but a cumulative, confirmatory consideration. It tells us: if you have independent reason to think the Gospel portrait of Jesus — both his claims and his character — is substantially trustworthy, then a powerful coherence emerges, one that resists the "merely a good teacher" reduction. It does not manufacture that trust from nothing.

To the guru objection: here Christianity can afford to be generous, and the sinlessness claim does real work. The "sincerely mistaken sage" is a live possibility — but it is precisely the possibility that the moral portrait makes harder, not impossible, to sustain. A man may be sincerely deluded about a metaphysical fact. It is stranger for a man of penetrating psychological insight, who diagnosed self-deception in others with surgical precision and warned relentlessly against pride, to have been catastrophically self-deceived at the very center of his self-understanding — and stranger still that this delusion left no other mark on a life his intimates judged blameless. Possible? Yes. The defender must concede that grandiosity and sanctity have, on rare occasions, coexisted. But the conjunction is improbable, and improbability is what evidential arguments trade in.

To the circularity objection — the most serious of the three — the reply is that the argument need not treat the Gospels as uniformly reliable or wholly unreliable. The historian can grant, on ordinary critical grounds (multiple attestation, the criterion of embarrassment, coherence with a plausible first-century Jewish setting), that the broad moral character and the implicit authority-claims of Jesus are well-rooted in the tradition, while remaining more cautious about specific Johannine formulations. The argument is then not viciously circular but appropriately layered: it takes what critical scholarship grants and asks what best explains it. This much must be granted honestly: every link in the chain depends on source-judgments a reasonable person can weigh differently. But what the objection does not show is that the layered reading is unreasonable — only that it is not compulsory. And the decisive data it must still explain sit in Mark, our earliest Gospel, not merely in the later John: the man who forgives sins in God's place, reinterprets the Law on his own authority, and makes himself the criterion of the final judgment. That portrait is early, and it is what the "great moral teacher" reading has to explain away.

The Honest State of the Scholarship

It would be misleading to suggest the trilemma enjoys broad scholarly endorsement as a proof; it does not. Among professional New Testament scholars and philosophers of religion, Lewis's formulation is widely regarded as rhetorically powerful but logically incomplete precisely because of the legend objection — a verdict shared even by sympathetic Christian thinkers. The question of Jesus's self-understanding remains genuinely contested. A maximalist camp (Wright, Richard Bauckham, who argues for a "Christology of divine identity" rooted in the earliest layers) holds that a high view of Jesus is embedded in the earliest sources. A minimalist camp (Ehrman, and much of the older history-of-religions tradition) holds that exalted Christology is a later development. This is a live, unsettled debate, and any reader should know that the argument from character draws its strength from the maximalist side of a contested ledger.

What It Does, and Does Not, Establish

So what have we got? Not a proof of the deity of Christ. Not a knock-down refutation of the skeptic. The argument from Jesus's character does not, by itself, establish that the Gospels are reliable, that the resurrection occurred, or that the high self-claims are authentic rather than developed.

What it does establish is narrower and still substantial. Given a broadly trustworthy portrait of Jesus, it shows that the tidy modern compromise — admirable teacher, discard the claims — is unstable. It shifts the burden: the skeptic who wants to keep Jesus's moral greatness must reckon with the claims that came packaged with it, and the route of escape — "legend" — is not free, but commits one to a particular, defensible-but-contestable reconstruction of how the Gospels came to be. And it offers the believer not a club but a confirmation: that the One the Church confesses as Lord wore a character that fits the confession, rather than mocking it.

Lewis was right that Jesus will not stay in the box we build for him. Where he was perhaps too quick was in suggesting he had left us only three doors. There is a fourth. But the fourth door does not lead, as the skeptic hopes, back to the safe and tepid sage. It leads into the hardest and most interesting question in all of history: what kind of man was actually remembered, and why those who remembered him remembered a man in whom they found no flaw.