What Is the Argument from Religious Experience?

What Is the Argument?

The argument from religious experience takes as its premise the fact that many people, across cultures and eras, report experiences that they take to be encounters with the divine—an overwhelming sense of presence, a mystical union, a voice, a vision, a sense of being loved by something greater than oneself. The argument treats these reports as prima facie evidence that the divine is real, on the principle that experiences are, by default, to be trusted unless we have reason to think they're misleading. If thousands of sober people report seeing something, we take their testimony as evidence that there is something to see; the argument asks why the religious case should be different.

The argument has a distinctive epistemic shape. It doesn't infer God as a hypothesis that explains the data; it treats the experiences as themselves a form of perception, on a par with seeing a tree or hearing a voice. If the experience is genuinely perceptual, then the believer is within her rights to trust it, just as we trust ordinary perception, unless there are defeaters. The argument, in its modern form, is less a proof than a defense of the rationality of belief based on experience.

William James and the Varieties

William James's The Varieties of Religious Experience (1902), based on his Gifford Lectures, is the foundational modern text. James gathered hundreds of reports, from saints, mystics, and ordinary believers, and argued that they share common features: a sense of the presence of a "more" than the visible world; a feeling of being in relation to it; and a transformation of the subject toward peace, courage, and moral seriousness. James held that the convergence of reports from very different people and cultures is evidence that the experiences are responses to something real, not just private fantasies.

James also distinguished the "fruits" of religious experience from its "roots." He was less interested in whether the experiences are caused by God than in whether they produce good lives—and he argued that they often do. This pragmatic strain makes James a complicated figure in the argument: he supports the case for religious experience as veridical, but his primary criterion is practical. The Varieties remains the richest single source for the phenomenology of religious experience, and most later discussions build on or respond to it.

Swinburne's Principle of Credulity

Richard Swinburne gave the argument its sharpest epistemic form in The Existence of God (1979, revised 2004). Swinburne invokes two principles. The principle of credulity: if it seems to a subject that something is present (a red patch, a voice, a divine presence), then, in the absence of defeaters, the subject is justified in believing that something is present. The principle of testimony: other people's reports of their experiences are prima facie credible, in the absence of reason to doubt them. Together, these principles license the inference from widespread reports of religious experience to the probable existence of God.

Swinburne's principles are general: they apply to ordinary perception, to history, to law. He argues that if we reject them for religious experience, we should reject them across the board, which would undercut all empirical knowledge. The force of the argument comes from the parity between religious and ordinary experience: if you trust the latter, you should trust the former, unless there's something specific to religious experience that defeats it. The burden shifts to the critic to identify the defeaters.

The Main Objections

Several objections press on the argument. The first is the diversity challenge: religious experiences differ across traditions—Christian mystics encounter Christ, Sufis encounter Allah, Buddhists report the dissolution of self, Hindus meet Vishnu or Shiva. If the experiences were all responses to the same reality, why the variation? The defender can reply that the same reality is experienced through different conceptual and cultural lenses, or that the different experiences reflect different aspects of a single divine reality. The critic can reply that the cultural shaping is so pervasive that the inference to a common object is undermined.

The second objection is the psychological one: religious experiences correlate with brain states, with fasting, with stress, with psychedelics, and with cultural expectation. This suggests that the experiences are products of the brain and the social setting, not responses to an external divine. The defender's reply is that correlation with brain states doesn't show that the experience is non-veridical—every perception has a brain state as a condition, and that doesn't make perception non-veridical. But the cumulative weight of psychological explanations does reduce the probative force of the reports for many philosophers.

The third objection is the privacy challenge. Religious experiences are private, not publicly repeatable, and not intersubjectively checkable in the way ordinary perception is. If you see a tree, I can come look; if you experience God, I can't. The defender argues that the principle of testimony covers this—we trust reports of private experiences all the time, including in science and history—but the critic argues that the lack of public checkability makes the inference weaker than the perceptual analogy suggests.

The Reformed Epistemology Connection

Alvin Plantinga's reformed epistemology, developed in the 1980s and 1990s, gives a related but distinct account. Plantinga argues that belief in God can be "properly basic"—warranted without argument—if it is produced by a properly functioning cognitive faculty (the sensus divinitatis) designed to deliver belief in God in response to the appropriate circumstances (beautiful nature, guilt, gratitude). This isn't exactly the argument from religious experience, but it shares the structure: the deliverances of religious cognition are treated as prima facie credible unless defeated. The SEP entry on religious epistemology treats Plantinga's view as a major contemporary development.

Plantinga's account is less a proof than a defense of the rationality of theistic belief. It doesn't show that God exists; it shows that the believer isn't irrational for believing. The argument from religious experience, in Swinburne's hands, is more ambitious: it aims to show that the experiences raise the probability of God. The two are often discussed together, and both face the same family of objections about defeaters and cultural shaping.

Why It Matters

The argument from religious experience matters because it connects the philosophical debate about God to the actual lives of believers. Most theists believe because of experience—answered prayer, a sense of presence, a conversion—rather than because of arguments. If those experiences can be treated as evidence, then theistic belief rests on something more than abstract metaphysics; it rests on the perceived encounters of millions of people. The argument gives those encounters a philosophical hearing.

The argument also matters for the epistemology of perception generally. If you accept that experiences are prima facie credible, you're committed to taking religious experience seriously. If you reject that for the religious case, you need to say why—and the answer has implications for how we treat other kinds of testimony, including historical and scientific. The SEP entry treats the argument as a serious one, not a knockdown, and the debate about its force continues.

Sources

• Stanford Encyclopedia of Philosophy, "Religious Experience" — https://plato.stanford.edu/entries/religious-experience/
• Stanford Encyclopedia of Philosophy, "Philosophy of Religion" — https://plato.stanford.edu/entries/philosophy-religion/
• Stanford Encyclopedia of Philosophy, "William James" — https://plato.stanford.edu/entries/james/
• Stanford Encyclopedia of Philosophy, "Religious Epistemology" — https://plato.stanford.edu/entries/religious-epistemology/

Related Topics

• Does God Exist? — the broader debate this argument belongs to.
• What Is the Argument from Desire? — a related experiential argument.
• What Is the Fine-Tuning Argument? — the design-based companion.
• What Is the Moral Argument for God? — the value-based companion.
• Philosophy of Religious Experience — the wider framework.