Chapter 35

NDEs as Evidence for Substance Dualism and Against Physicalism

One thread can be cut. A rope of many threads, woven together, is much harder to break. That is the picture I want you to keep in mind as we work through this chapter. The case for substance dualism — the view that a human being is made of both a physical body and an immaterial soul — does not hang on any single line of evidence. It hangs on many lines, each one independent of the others, all of them pointing to the same conclusion. When we put them side by side, we are not staring at one fragile thread. We are looking at a rope.

This chapter pulls all those threads together. We have spent thirty-four chapters walking through the research on near-death experiences (NDEs) and deathbed experiences (DBEs). Now I want to step back and ask the big question. Taken as a whole, what does this evidence prove about human nature? My answer is straightforward: the cumulative evidence from veridical NDEs, blind NDEs, children's NDEs, shared-death experiences, terminal lucidity, and the lasting transformations NDErs report constitutes a powerful empirical case for substance dualism — and against physicalism, the view that human beings are nothing more than physical bodies and brains.¹

Before we look at the evidence, though, we need a quick refresher on the philosophical landscape. Christian philosophers and theologians have argued for centuries that physicalism faces serious problems quite apart from any NDE research. The NDE evidence, as we will see, lines up beautifully with what the philosophical arguments already predicted.

The Philosophical Case for the Soul: A Brief Tour

What is substance dualism, exactly? Michael Wilkinson summarizes it well. Substance dualism affirms that "human beings have both physical and mental aspects," that "the mental and physical aspects are equally fundamental," and that "the soul and the body are ontologically separate and separable substances" that nevertheless "act directly on each other."² Physicalism, by contrast, insists that the universe is "materially monistic" and that "human beings are fundamentally material beings," rejecting any appeal to an immaterial substance.³ Those are the two main contenders. Now let me walk through six classic philosophical arguments that have been used to support the dualist side. I will keep each one short.

1. The argument from qualia (the hard problem of consciousness). When you taste coffee, see the color red, or feel a sharp pain, there is something it is like to have that experience. Philosophers call those felt qualities "qualia." Here is the puzzle: we can describe every neuron firing in your brain when you see red, but no amount of physical description tells us why it feels like anything at all. David Chalmers famously called this "the hard problem of consciousness." If consciousness were just brain activity, we should be able to read it off the physics. We can't. There is a gap between the physical story and the felt experience — and that gap is exactly what dualism predicts.

2. The argument from intentionality. Thoughts are about things. I can think about my grandmother, about the number seven, about a unicorn. But the matter inside my skull — atoms, neurons, chemicals — is not, in itself, "about" anything. A rock is not about anything. A river is not about anything. How does the brain, made of stuff that has no aboutness, produce thoughts that do? On dualism, the answer is simple: thoughts are properties of an immaterial mind. On physicalism, this remains a deep puzzle.

3. The argument from personal identity. You are the same person you were ten years ago, even though almost every cell in your body has been replaced. The atoms have come and gone. The brain has been rewired by countless experiences. Yet you remain you. Joshua Farris draws on the philosopher Alvin Plantinga to make the point with what is called the replacement argument. Surgeons can replace organs. They could, in principle, replace any physical part of you. So what makes you, you? Plantinga argues that you "have the property possibly to exist when [your] body does not."⁴ If that is even possible, then you cannot be identical to your body or any part of it. The most natural fit for the bearer of personal identity is an immaterial soul.⁵

4. The unity of consciousness argument. Right now, you are reading these words, perhaps hearing background noise, feeling your chair, and remembering something from yesterday — all at once, all gathered into one unified experience. The brain, however, is a collection of many parts and processes. There is no single neuron, no single brain region, where everything comes together. So what unifies your conscious experience? Dualists answer: an immaterial, simple self that holds it all together.

5. The argument from mental causation. When you decide to raise your hand, your hand goes up. Your thought caused a physical action. But if everything is purely physical, and physics is causally closed, how can a non-physical thought push around physical neurons? Some physicalists try to dodge this by saying mental states just are physical states. Others say mental events are caused by physical events but never the other way around — making us spectators in our own lives. Neither dodge is comfortable, and Christian belief in real human responsibility before God depends on real mental causation.

6. The argument from reason. C. S. Lewis and, more recently, Alvin Plantinga have argued that if our brains were produced by mindless physical processes aimed only at survival, we would have no good reason to trust the conclusions our brains reach about deep matters such as God, ethics, or even physics. If our thoughts are just neuron-firings, they may help us survive, but truth is a different target. On dualism, our reasoning is the activity of a soul made in the image of a rational God. On physicalism, the very act of reasoning toward physicalism becomes self-defeating.⁶

None of these arguments, on their own, settles the question. Together, however, they show that physicalism is anything but the obvious "scientific" position. As John Cooper has long argued, holistic dualism — the view that humans are body-soul composites — fits both the biblical witness and our actual experience better than monistic alternatives.⁷ And as Wilkinson points out, the philosophical claim that science has settled the matter is overstated. Substance dualism is "the historical tradition of the church," and the modern dualism-physicalism debate, contrary to the impression sometimes given, "remains wide open."⁸

The Empirical Confirmation: Eight Lines of Evidence

Now here is where things get interesting. Philosophy can take us only so far. What if there were also empirical evidence — actual observations of the world — that pointed to the same conclusion? That is exactly what the NDE research provides. Let me summarize the eight lines that have run through this book.

(a) Veridical NDEs (Chapter 6). Patients in cardiac arrest, with no detectable brain function, have repeatedly reported information they could not have known through their physical senses — the placement of a shoe on a hospital ledge, the precise actions of doctors during resuscitation, conversations in waiting rooms down the hall. These reports have been verified by independent observers. Consciousness, it seems, was perceiving accurately while the brain was offline.⁹

(b) The Pam Reynolds case (Chapter 7). Reynolds underwent "standstill" surgery — her body was cooled, her heart stopped, her blood drained, and her brain monitored for any electrical activity. There was none. Yet she returned with a detailed, accurate account of the surgery, including specific instruments and words spoken. As I argued in that chapter, this is not a philosophical thought experiment. It is an empirical observation: vivid consciousness, with zero measurable brain activity, then a body of corroborated detail afterward.

(c) Blind NDEs (Chapter 8). Kenneth Ring and Sharon Cooper studied people who had been blind from birth — whose visual cortices have never processed sight — and yet who reported clear visual perception during their NDEs, perception later confirmed by sighted witnesses. The brain literally lacked the hardware required to produce visual experience. Something else was doing the seeing.

(d) Children's NDEs (Chapter 9). Very young children, some as young as three, report the same core NDE features as adults: leaving the body, the brilliant light, deceased relatives, returning. They do not report the cultural images they would have absorbed from cartoons and fairy tales. The "cultural expectation" objection collapses here. These children had no NDE narrative to repeat.

(e) Shared-death experiences (Chapter 10). Healthy bystanders — spouses at the bedside, hospice workers, a sister in the next room — have reported sharing portions of a dying person's experience. They saw the light, they sensed the departure, sometimes they accompanied the person partway. These bystanders were not in cardiac arrest. They were not oxygen-deprived. The "dying brain" hypothesis simply cannot reach them.

(f) Terminal lucidity (Chapter 34). Patients with advanced Alzheimer's disease, severe brain damage, and lifelong cognitive impairment have, in their final hours or days, suddenly become fully lucid — recognizing family members, holding meaningful conversations, expressing love. The brain is destroyed. Yet the mind shines through. As I argued in Chapter 34, this is exactly what dualism predicts and what physicalism cannot accommodate.

(g) The biblical evidence (Chapter 5). Scripture pervasively teaches a body-soul anthropology. Genesis 35:18 describes Rachel's nephesh (נֶפֶשׁ) "departing" at death. Jesus committed His pneuma (πνεῦμα) to the Father (Luke 23:46). Paul desired "to depart and be with Christ" (Phil 1:23). Revelation 6:9–11 shows the conscious souls of the martyrs under the altar. The biblical witness is not on the side of physicalism.

(h) The aftereffects data. NDErs typically undergo a profound, durable, positive transformation — reduced fear of death, increased compassion, a new sense of purpose, often a deepened spiritual life. These changes last for decades. A brief episode of brain malfunction is a poor explanation for a lifelong reorientation of personality and values.

Why the Naturalistic Explanations Fall Short

Skeptics have proposed many naturalistic explanations for NDEs. Each one, I want to grant, is offered in good faith. Most try to honor the data while keeping a physicalist worldview intact. The trouble is that none of them works once we consider the full body of evidence. Let me run through them quickly. Appendix B treats them in greater detail.¹⁰

Oxygen deprivation. The most popular hypothesis: a dying brain, starved of oxygen, generates hallucinations. The fatal problem is that oxygen deprivation produces confusion and fragmentary experiences, not coherent ones — and it cannot explain veridical information, blind NDEs, shared-death experiences, or consistent positive aftereffects. Patients in shared-death experiences were not oxygen-deprived at all.¹¹

DMT release. Some have suggested the brain floods with the psychedelic compound DMT at death. There is no good evidence the human brain releases DMT in such quantities, and DMT trips do not match NDE phenomenology. They certainly do not produce verified information from the operating room ceiling.

Temporal lobe stimulation. Stimulating certain brain regions can produce odd, disorienting experiences. But, as Sabom notes from neurologist Ernst Rodin's research, the central features of NDEs — peace, the knowledge of being out of the body, profound joy — are essentially never produced by temporal lobe seizures.¹² The artificially induced experiences are fragmentary; NDEs are coherent and frequently accompanied by verifiable detail.

REM intrusion. Some researchers have noted overlap between NDE features and REM sleep. The correlation, if it holds, does not establish causation; and patients in cardiac arrest are not in REM sleep. REM intrusion does not explain veridical information either.

Residual brain activity. What if there is some hidden brain activity that monitors don't detect? This may be the last refuge of the physicalist, and I have some sympathy with the caution it represents. But it cannot reach the Pam Reynolds case, where no electrical activity was registered for an extended period under tight medical monitoring. Nor can it explain terminal lucidity, where the brain has been physically destroyed.

Expectation and cultural conditioning. NDErs simply imagine what they have been culturally primed to imagine, the argument goes. Children's NDEs ruin this. So does cross-cultural consistency. So does the frequency of unexpected content.

Confabulation. Sometimes memory invents details to fill gaps. But confabulation cannot create new, verifiable information about events the experiencer had no normal way of knowing.

The Convergence Argument

Now I want to put this in its strongest form. Take any single category of NDE evidence. Imagine that we somehow showed it was unreliable. Veridical NDEs, for example — let's pretend a critic could explain those away. We still have blind NDEs. Take those out. We still have children's NDEs. Take those out. We still have shared-death experiences. Take those out. We still have terminal lucidity. The point is that you cannot dismantle the case by attacking one line. Each line stands on its own evidence, gathered by different researchers, in different settings, with different participants, often using different methods.

This is what philosophers and scientists call a convergence argument. When wholly independent lines of evidence keep pointing to the same conclusion, the cumulative weight is far greater than any one of the lines by itself. It would be one thing if we had only one type of evidence repeated many times. We don't. We have different types of evidence — verified perceptions, blind perception, child reports, bystander reports, lucid moments in destroyed brains — converging on the same conclusion from very different angles.

What is that conclusion? It is the same one Cooper drew years ago, even before some of the more striking research had appeared. After describing two well-documented NDE cases — including one in which a man met an acquaintance who had died twenty-four hours earlier two thousand miles away, news the experiencer had not yet received — Cooper observed that "many other accounts similarly report meeting persons whose deaths were unknown to the reporter," while "subjects do not report meeting people in this sort of experience who have not died."¹³ Cooper is appropriately careful: he does not claim NDEs by themselves prove dualism beyond doubt. He does say that the experiences "would prove dualism only if the subject's brain waves were flat at the time of the experience."¹⁴ Well — we now have such cases. Pam Reynolds is one of them. Cooper's careful skepticism, on his own terms, is being met by the data that has come in since.

Why This Matters for Christology

I want to draw one more line, and then we are done. The case for the soul is not just a philosophical curiosity. It matters for our understanding of Jesus Christ Himself. I have developed this argument at length in my companion book The Word Made Flesh, and I will simply summarize here.

If the soul survives bodily death, then Christ's soul survived His death on the cross. That preserves what theologians call the hypostatic union — the unbreakable union of the divine Person of the Son with His human nature — through the three days between the crucifixion and the resurrection (the triduum mortis, "three days of death"). It also makes sense of 1 Peter 3:18–19, where Christ is "put to death in the flesh but made alive in the spirit," and "in [the spirit] he went and proclaimed to the spirits in prison." That descent is impossible on physicalism. Wilkinson notes that the Son's "real subsistence … in his assumed human nature is an undivided act of God,"¹⁵ which presses us toward an anthropology in which the Son retains a real, complete humanity — body and soul — even through death.

If physicalism is right, Christ's death dissolves the Incarnation, at least temporarily. If dualism is right, Christ remains fully God and fully man, His soul active during the triduum, His body resting in the tomb until the resurrection rejoins them. The NDE evidence and the Christological evidence point to the same anthropology. They reinforce each other.

A Word to My Conditionalist Friends

Many Christians who hold to conditional immortality — the view I lean toward myself — have also adopted physicalism, often because they think dualism somehow sneaks in the "natural immortality of the soul" Plato style. I want to gently push back on that pairing. Conditional immortality does not require physicalism. The soul can be real, conscious in the intermediate state, and yet not naturally immortal. It can depend on God for its continued existence at every moment, just as the body does. CI plus substance dualism is, I believe, the better framework — it preserves both the biblical teaching on the conscious intermediate state and the biblical teaching that immortality is a gift, not a property. The NDE evidence reinforces the dualism side of that pairing without undermining the conditionalist side at all.

Conclusion: A Rope, Not a Thread

Where does all this leave us? Here is the picture I want you to carry. The philosophical case for the soul — qualia, intentionality, personal identity, unity, mental causation, reason — was already strong before any NDE researcher walked into a hospital. The empirical case from NDEs, DBEs, and terminal lucidity arrived as confirmation, not as a new and shaky argument. Each line of evidence is its own thread. Together, they make a rope. That rope holds. Physicalism, despite its cultural prestige, simply cannot bear the weight of what we now know.

What this means, in plain English: you are more than your body. There is something in you that is not made of atoms, that perceives, thinks, loves, and worships, and that will not be extinguished when your heart stops. That something is what Scripture calls the soul. The same God who made it will receive it. And in the end — when our Lord returns and the dead in Christ are raised — soul and body will be reunited in a glorified humanity that even our richest NDE accounts can only hint at. "For now we see in a mirror dimly, but then face to face" (1 Cor 13:12). The dim glimpse the NDE research provides is real. The face-to-face is still to come.