Are faith and reason opposed to each other?

Question 60090.

Faith and reason are assumed by almost everybody to be opposites, and the assumption has done real damage to Christian witness. On one side stands the believer who parks his brain at the church door. On the other stands the clear eyed rationalist who has outgrown all that. It is a caricature, and it is one of the most durable caricatures in our culture.

I want to take it apart, because the biblical picture of faith and reason is nothing like the one in the popular imagination, and getting it straight matters for how you think, how you doubt and how you talk to people who do not believe.

Where the False Choice Came From

The modern version of the story owes a good deal to the Enlightenment, and rather more to a late nineteenth century publishing project. Two books, John William Draper’s History of the Conflict between Religion and Science and Andrew Dickson White’s A History of the Warfare of Science with Theology, invented a running battle that historians have spent the last century dismantling.

Some of the fault is ours. Christians have sometimes defended indefensible readings of Scripture in the name of loyalty, and have sometimes treated questions as disloyalty. A church that punishes honest enquiry teaches everyone watching that faith and reason really are enemies, whatever the doctrinal statement says.

And some of it comes from a genuine equivocation. The word faith is used for two quite different things: trust grounded in evidence, and belief held despite evidence. Almost every argument on this subject is really an argument about which of those the Bible means.

What Biblical Faith Actually Is

The New Testament word is pistis, and its ordinary sense is trust, reliance, confidence placed in someone. It is the word you would use of a person you rely on, not of a leap into fog. Faith in Scripture always has an object, and the reasonableness of the faith depends on the reliability of the object.

Hebrews 11:1 is often quoted as though it defined faith as believing without evidence. It says faith is the assurance of things hoped for, the conviction of things not seen. Not seen is not the same as not evidenced. I have never seen the Battle of Hastings, and I am entirely confident it happened.

So faith and reason are not rivals in Scripture. Faith is what you do with the conclusions reason has reached about a trustworthy person. When Thomas doubted, Jesus did not rebuke him for wanting evidence. He gave him the evidence and told him to stop disbelieving.

What Reason Can and Cannot Do

Reason is a gift, part of what it means to be made in God’s image, and Scripture never disparages it. God says come now, let us reason together. Paul reasoned in the synagogue at Thessalonica. The Bereans were commended for examining the Scriptures daily to see whether these things were so, which is a straightforwardly evidential activity.

Reason has limits, though, and pretending otherwise is its own kind of superstition. It cannot establish its own first principles without circularity. It cannot reach conclusions its premises do not contain. And it operates in people who are not neutral, who have wills as well as intellects, and who are perfectly capable of finding reasons for what they had already decided to want.

That is the biblical diagnosis and it is worth being honest about it. Scripture says unbelief is a moral condition as much as an intellectual one. Faith and reason work together, but neither of them works in a vacuum, and the person doing the reasoning is part of the problem.

How Faith and Reason Work Together

Think of an ordinary human relationship, which is the analogy Scripture keeps using. You come to trust someone by evidence: what they have said, what they have done, whether they kept their word. Then trust goes beyond the evidence, because it commits you before every question is settled. That is not irrational. It is what trust is.

The Christian pattern runs the same way. There is evidence for the existence of God from the character of the universe. There is historical evidence for the life, death and resurrection of Jesus. There is the reliability of the documents. Reason weighs all of that, and then faith steps onto the ground reason has surveyed and commits.

Anselm’s phrase, faith seeking understanding, catches the other direction of travel. Once you have committed, a great deal becomes intelligible that was not before, and the understanding deepens the trust. Faith and reason move in a circle here, and it is a virtuous one.

Answering the Charge of Blind Faith

The blind faith objection is worth meeting head on, because it is simply not what the Bible asks for. Moses is given signs. Elijah proposes a public test on Carmel. Jesus points to His works when John the Baptist wavers. Paul appeals to more than five hundred witnesses of the risen Jesus, most of them still alive and available to be asked.

Compare that with what the objection assumes, and the mismatch is obvious. Scripture is full of invitations to check. The problem is not that Christianity forbids investigation; it is that investigation costs something, because if it comes out true you have to do something about it.

There is more on this at what is faith, on the difference between trust and mere assent at saving faith and intellectual belief, and on the case for the resurrection at the evidence for Jesus’ resurrection.

Everyone Believes Something They Cannot Prove

It is worth pointing out kindly that the sceptic is in the same position. That the external world exists, that other minds exist, that memory is broadly reliable, that the future will resemble the past, that logic is valid: none of these can be demonstrated without assuming them. Every worldview rests on commitments taken on trust.

So the real question is never faith and reason as such. It is which set of foundational commitments makes best sense of the world we actually inhabit, including the parts that resist explanation: consciousness, moral obligation, the intelligibility of the universe, beauty, the persistence of guilt.

I think the Christian account carries that weight better than its rivals, and I think it does so on grounds anyone can examine. That is a claim about reason, made by faith, and I see no tension in it at all. See answering the claim that truth is relative for the neighbouring question.

When Reason Runs Out

There will still be places where you cannot see the bottom. Why God permitted a particular grief. How the Trinity holds together. What He is doing in a season that makes no sense at all. Faith and reason will take you a long way and then you will be standing in the dark holding somebody’s hand.

That is not a failure of the system. It is what trusting a person greater than yourself must eventually feel like. A God small enough to be fully mapped by my mind would not be worth trusting with anything important.

Job never received an answer to his question. He received an encounter, and it was enough. I have found that pattern repeats: the answer, when it comes, is more often a Person than an explanation.

Reason Is Not Neutral

There is a complication that both sides of this argument tend to skip. Reasoning is done by people, and people are not calculating machines. We have histories, loyalties, fears and appetites, and these shape which arguments strike us as compelling long before we begin weighing them formally.

Scripture says this bluntly. Paul writes that the natural person does not accept the things of the Spirit of God, and Jesus tells Nicodemus that people love darkness rather than light. That is not an attack on the intellect; it is a description of what the intellect is attached to.

The practical consequence matters for how we talk to people. If unbelief were purely an information problem, better arguments would solve it. Since it is also a matter of the will, we argue and we pray, and we do not treat the two as alternatives. See 1 Corinthians 2:14.

So, now what?

If you have been carrying the idea that becoming a Christian meant switching your mind off, put it down. Read the Gospels as documents. Look at the evidence for the resurrection. Ask the hard questions out loud, in a church that can take them, and notice how much more there is to say than you were led to believe.

And if you are already a believer, do not settle for a faith you cannot explain. Faith and reason belong together, and a Christian who has thought carefully is a great deal more use to a doubting friend than one who has only ever been told to believe. What is the question you have been avoiding, and who could you ask about it this week?

But in your hearts honour Christ the Lord as holy, always being prepared to make a defence to anyone who asks you for a reason for the hope that is in you; yet do it with gentleness and respect.

1 Peter 3:15 (ESV)