In the contemporary debate between internalists and externalists in epistemology, which position is more suitable for addressing religious faith, and which one begs the question?

In the contemporary debate between internalists and externalists in epistemology, which position is more suitable for addressing religious faith? This question lies at the heart of contemporary analytic philosophy of religion and has profound implications for how we evaluate the rationality of religious belief.

Inadequate Responses to Avoid

From some defenders of theism:

"Externalism automatically justifies faith, so it's most suitable." This is a misleading oversimplification. Externalism does not "automatically justify" any belief. Even in the externalist model, belief needs to result from a reliable process. The mere fact that one "doesn't need awareness of evidence" doesn't mean any religious belief is warranted.

"Internalism presupposes atheism." This is confusion. Internalism demands mentally accessible evidence, but this doesn't exclude religious evidence. Internalist philosophers of religion (Swinburne, Craig) provide detailed arguments for theism.

"The entire debate is irrelevant to true faith." This is an escape from philosophical discussion. Even if faith has dimensions beyond theoretical knowledge, the question of its epistemic rationality is legitimate.

From some critics:

"Internalism is the only rational position." This is dogmatic. Externalism has strong defenses from prominent philosophers (Goldman, Sosa, Greco). Wholesale rejection ignores the development of contemporary epistemology.

"Externalism is merely a trick to justify faith without evidence." This is a misunderstanding. Externalism is a general theory of knowledge applied to all beliefs, not just religious ones. It developed for reasons independent of religion (the Gettier problem, critique of internal justification).

Structure of the Debate: What are Internalism and Externalism?

Internalism:
Knowledge/justification requires that justifying factors be "accessible" from the first-person perspective. If your belief is justified, you must be able in principle to be aware of what justifies it.

Its main forms:
- Accessibilism: You must be able to access your justifiers through reflection.
- Perspectivism: Justification depends on your subjective epistemic perspective.
- Evidentialism: Belief is justified only insofar as it's supported by evidence available to you.

Externalism:
Knowledge/justification can depend on factors outside the epistemic agent's awareness. What matters isn't what you know about your belief, but how it arose and its relation to truth.

Its main forms:
- Reliabilism: Belief is justified if it results from a reliable cognitive process.
- Proper Functionalism: Belief is justified if it results from cognitive faculties functioning properly in an appropriate environment.
- Virtue Epistemology: Justification arises from exercising epistemic virtues.

Applying the Debate to Religious Faith

The Internalist Model of Faith:

Richard Swinburne in "The Existence of God" (2004) represents a sophisticated internalist model. Faith in God is justified insofar as it's supported by available evidence (cosmological, design, religious experience, miracles). The rational believer must be able to provide reasons for their faith.

Advantages of this approach:
- Respects the common intuition that important beliefs need conscious justification.
- Allows for shared rational discussion between believers and others.
- Avoids relativism ("everyone is justified from their perspective").

Its challenges:
- Does the ordinary believer have the ability to formulate complex philosophical arguments?
- What about the simple faith of children or the uneducated?
- Is personal religious experience "evidence" in the internalist sense?

The Externalist Model of Faith:

Alvin Plantinga in "Warranted Christian Belief" (2000) provides the strongest externalist defense. Faith in God can be "knowledge" even without arguments, if it arises from a sensus divinitatis (divine sense) functioning properly.

The model: If God exists, He likely equipped us with a cognitive faculty for direct perception of Him. This faculty (like sensory perception) produces beliefs directly warranted about God.

Advantages of this approach:
- Accommodates simple faith and direct religious experience.
- Avoids requiring every believer to be a philosopher.
- Parallels how we acquire most knowledge (by trusting our faculties, not arguments).

Its challenges:
- How do we distinguish between genuine sensus divinitatis and psychological delusion?
- What about religious diversity? Does every religion have its special "sensus"?
- Does this make rational discussion with non-believers impossible?

The Problem of Circularity: Who Assumes What?

Internalist Assumptions:
- Awareness of evidence is possible and necessary for justification.
- Rationality requires the ability to provide reasons.
- Justification is "personal" (from the agent's perspective).

Are these neutral assumptions? Externalists respond: No, these assumptions themselves need justification. Why must justification be tied to consciousness?

Externalist Assumptions:
- The connection between belief and truth can be outside consciousness.
- Objective reliability is more important than subjective awareness.
- Some knowledge is "direct" and doesn't need inference.

Are these neutral? Internalists respond: How do we evaluate "reliability" without internal criteria? Doesn't this open the door to justifying any belief by claiming it "results from a reliable process"?

Assessment: Which is More Suitable for Religious Faith?

The answer depends on what we want to achieve:

If the goal is dialogue between believers and others: Internalism is more suitable. It allows common ground for discussion where evidence and arguments can be evaluated by shared criteria.

If the goal is accommodating diversity in forms of faith: Externalism is more suitable. It accommodates simple faith, mystical experience, direct perception of the sacred.

If the goal is evaluating personal faith rationality: Both have a role. Internalism for the reflective believer seeking reasons. Externalism for the believer confident in their direct experience.

Toward Critical Integration

Some contemporary philosophers (William Alston, Richard Swinburne in his later works) seek an integrative position:

- Basic level: Externalist. Faith can arise from direct experience or innate perception.
- Reflective level: Internalist. When challenged or doubting, the believer can (and perhaps should) seek supporting evidence.
- Multi-dimensional justification: Some aspects of faith need internalist justification, others suffice with externalist reliability.

From the Perspective of Rational Probability (rajḥān ʿaqlī)

The position of rational probability transcends the dichotomy:
- Doesn't demand definitive internalist certainty (against rigid internalism).
- Doesn't settle for alleged reliability without examination (against naive externalism).
- Accepts the convergence of internal evidence and external indicators.
- Views rational faith as accumulation of probabilities, not a single proof.

This position avoids the problematic assumptions of both sides and provides a more flexible and realistic framework for evaluating religious faith.

Where We Stand in This Debate Today

The period 2020-2026 witnessed notable developments in this debate. Most prominent was the rise of "Third-Wave Externalism" represented by John Greco and Ernest Sosa, which integrates elements of virtue epistemology with reliabilism, narrowing the gap between the two camps. In philosophy of religion specifically, works by Matthew Beddor (2021) and Adam Green (2022) raised discussion about whether religious experience meets the conditions of "cognitive contact" required by modified externalist theories. Similarly, Terence Cuneo (2024) reopened the file on the relationship between ritual practice and epistemic justification, proposing that some forms of religious knowledge are "embodied" in ways that challenge the traditional dichotomy. Conversely, Jonathan Matheson (2023) developed an updated internalist argument that deep religious disagreement imposes an explanatory burden on externalists heavier than commonly acknowledged. The general trend moves toward hybrid positions acknowledging that the sharp dichotomy between internalism and externalism has exhausted its explanatory power, and that religious faith as a complex epistemic phenomenon needs more sophisticated analytical tools.

For Further Reading

- Alvin Plantinga, Warranted Christian Belief (Oxford UP, 2000)
- Richard Swinburne, The Existence of God, 2nd ed. (Oxford UP, 2004)
- William Alston, Perceiving God (Cornell UP, 1991)
- Michael Bergmann, Justification without Awareness (Oxford UP, 2006)
- Earl Conee & Richard Feldman, Evidentialism (Oxford UP, 2004)
- John Greco & Ernest Sosa (eds.), The Blackwell Guide to Epistemology (1999)
- Linda Zagzebski, Virtues of the Mind (Cambridge UP, 1996)
- "Family: Reformed Epistemology" page on the website
- "Formulation: Internalism and Externalism in Religious Epistemology" page