Why Believe?

Richard Dawkins says faith is "belief without evidence." Peter Boghossian says faith is "pretending to know things you do not know." If that is what faith means, then yes, it is the opposite of reason. The trouble is that no major Christian thinker ever defined faith that way.

In the Christian tradition, faith means trust, the kind of trust you place in a person or in evidence you find compelling. The Latin is fides. When the Bible says Abraham had faith, it does not mean he closed his eyes and guessed. It means he trusted God on the basis of God's promises and previous track record. Faith and trust are the same word in Greek (pistis) and Hebrew (emunah).

Reason (Latin ratio) is the work of weighing evidence, testing claims, following arguments. The classical Christian view is that faith and reason are partners, not enemies. Augustine said "believe so that you may understand," and also "understand so that you may believe." Anselm summed it up as "faith seeking understanding" (fides quaerens intellectum). Aquinas distinguished truths reason can reach on its own (the existence of God, basic morality) from truths that need to be revealed (the Trinity, the Incarnation) and said both are rational, even when one needs help to see.

So faith goes beyond reason in some places, sure, just like trusting a doctor goes beyond what you personally can verify. But faith does not go against reason. The Christian asks for evidence about the resurrection, about prophecy fulfillment, about the moral law written on conscience, about the design in the universe, then commits in trust to the Person behind all of it.

The two errors to avoid are rationalism (only what cold logic can prove counts) and fideism (just believe, do not think). The tradition has always rejected both.

Quick reply line: "Faith means trust, not blind belief. Reason and faith are partners. You weigh the evidence, then commit. That is what every Christian thinker from Augustine to Aquinas to Plantinga has said."

Look around at anything in the room. A chair, a cup, a tree out the window, your own hand. Each of these could have not existed. There is nothing built into the nature of chair that says it had to be. Its existence depends on something outside of itself: the wood, the carpenter, the tree, the soil, the sun. Things like this, things that could have failed to exist, philosophers call contingent.

Now stack all the contingent things in the universe together. The universe itself is the same kind of thing. It exists, but it could have not existed. There is nothing in the bare idea of universe that demands it be. So the same question applies to the whole stack: why is there a universe at all rather than nothing?

You cannot answer that by pointing to more contingent stuff. "The universe came from a prior universe" just pushes the question back. "It came from a quantum vacuum" names another contingent thing. "It's been here forever" still does not explain why an eternal contingent thing should exist rather than not exist. A long chain of borrowers is still all borrowers. Somewhere the chain has to land on something that does not need a loan, something that exists in itself, by the necessity of its own nature.

That is a necessary being. Not a thing that happens to exist; a thing that cannot not exist. There is only one kind of candidate for that role, and it is roughly what every classical tradition has called God.

Notice what this argument does not need. It does not need a beginning of the universe. Even a universe that has always existed is still a contingent universe. It does not need quantum physics or cosmology. It needs only one principle: things that exist have reasons for existing. That principle is what makes science possible. Deny it, and you are denying that "why?" is ever a real question.

The quick reply in conversation: "Anything that could have failed to exist needs a reason for existing. The universe could have failed to exist. So what is the reason? And whatever the reason is, if it could also have failed to exist, it needs a reason too. The chain only ends with something that cannot fail to exist."

The universe is rigged for life. The numbers that govern physics, the strength of gravity, the mass of the electron, the energy in empty space, are set so precisely that if any of them were off by a hair, no stars, no planets, no chemistry, no life of any kind would exist.

How precisely? The cosmological constant (the energy of empty space) is tuned to about one part in 10 with 120 zeros after it. Roger Penrose, a Nobel-winning physicist who is not a Christian, calculated that the universe's initial low-entropy state had a probability so small the number cannot fit in this paragraph. These are not religious claims, working cosmologists across the philosophical spectrum agree the fine-tuning is real. The dispute is over what it means.

There are only three possible explanations. Either the numbers had to be what they are (necessity), they happened to land where they are by luck (chance), or someone set them (design). Necessity is dead, even leading physicists like Stephen Hawking abandoned it. That leaves chance or design.

The strongest objection: maybe there are infinitely many universes with different physics, and we just happen to live in the one that works (the multiverse). The Christian reply has several parts. The multiverse cannot be observed, so positing it to escape design is no more scientific than positing God. The machinery that would generate a multiverse needs its own fine-tuning. And in a vast enough multiverse, you would expect to be a "Boltzmann brain", a random fluctuation of consciousness with false memories, vastly more often than a real person in a real universe. We are not Boltzmann brains.

Design remains the best explanation. The designer would have to be intelligent (capable of selecting from a parameter space), powerful (operating at the cosmic scale), and intentional (selected for life). That profile matches God.

The full debate-prep treatment follows.

The Holocaust was really evil. Not unfashionable, not culturally disapproved, not "wrong for us," really evil. Torturing children for fun is really wrong. If you agree, you have already accepted half the moral argument.

Here is the argument in plain shape. There are moral facts that are true for everyone, everywhere, regardless of opinion (objective moral values and duties). Those facts require an explanation. The best, and arguably the only, explanation is a moral lawgiver who is the standard of goodness. That lawgiver is God.

The argument matters because every functioning human being makes moral judgments constantly, "that was unfair," "that was cruel," "he should not have done that." Those judgments only make sense if morality is real, not a feeling. But if there is no God, where does that realness come from? Atoms do not issue commands. Evolution explains why we believe in morality (it helps us survive in groups), but that is a story about belief, not about whether the beliefs are actually true.

The strongest objection: "Atheists are demonstrably moral, so morality does not need God." The Christian reply: the argument is about grounding, not behavior. Of course atheists can be moral, that is exactly what Christianity predicts (Romans 2 says God's law is written on every heart). The question is not whether atheists follow morality, but whether their worldview can explain why anyone should.

The other big objection: "Is something good because God says so (then it is arbitrary), or does God say so because it is good (then goodness is above God)?" This is the Euthyphro dilemma. The Christian answer: neither horn. Goodness flows from God's nature. God commands what He does because of what He is. Goodness is not arbitrary, but it is also not above God.

If you cannot call the Holocaust really evil, you have given up too much. If you can, you owe an account of what makes it really evil. The moral argument says only God can give that account.

The full debate-prep treatment follows.

"If God is all-powerful and all-good, why is there so much evil and suffering in the world?" This is the most famous challenge to Christian belief, and the one most people feel personally.

The basic shape: God is supposed to be able to stop evil, smart enough to know about it, and good enough to want it stopped. So why hasn't He?

The first thing to notice is that there are two very different versions of this challenge. The logical version says God and evil cannot both exist, ever. That version is widely treated as answered. Free creatures who can really love and choose are a real good, and you cannot have real freedom without the possibility that some will choose wrong. So evil's existence is not a contradiction with God's existence.

The evidential version is harder. It does not say God is impossible; it says the sheer amount and kind of suffering makes God unlikely. Christians have several responses: some suffering shapes character; some serves goods we cannot yet see; the cross shows that God Himself enters into suffering rather than watching from a distance; and final judgment will settle accounts that history leaves open.

There is also a sharp turn the objection can be made to take. The word evil only has bite if there really is a standard of good it falls short of. If atheism is true and there is no such standard, then suffering is just unpleasant, not evil. The complaint that the world is wrong quietly borrows the moral framework Christianity supplies.

A final note: there are three layers here that need different answers. The intellectual question (is this consistent?) gets a philosophical reply. The evidential question (is this probable?) gets a cumulative case. The pastoral question (how do I live with my own loss?) gets Job, the Psalms, and the cross. Mixing the three up makes all three harder.

Jesus made claims about Himself that, if false, would mean He was either lying or out of His mind. If neither, the only option left is that the claims are true and He is Lord.

That is the trilemma. C.S. Lewis put it on the modern map in Mere Christianity: a man who said the things Jesus said is not on the menu as "a great moral teacher who never claimed to be God." That option is gone. Jesus forgave sins on His own authority, accepted worship, applied God's name to Himself ("before Abraham was, I am"), and stood before the Sanhedrin and made a claim they convicted Him of blasphemy for. His own contemporaries, friends and enemies alike, heard those claims as deity claims.

So you have three options.

He could be a liar: He knew the claims were false and said them anyway. But liars want something out of the lie, and Jesus got tortured to death with no payoff He could not have walked away from. He explicitly refused political power. Liars also slip; close companions catch them. His disciples lived with Him for years and went to their own deaths convinced He was telling the truth.

He could be a lunatic: He sincerely believed He was God and was just sincerely wrong. But people who sincerely believe they are God look like people who sincerely believe they are God. They do not write the Sermon on the Mount. They do not handle hostile interrogations with the wisdom Jesus showed. They do not have skeptical family members eventually convert. The clinical profile does not fit.

If He was not lying and not deluded, the third option is that the claims are true.

The point of the argument is to block the cultural escape hatch ("great moral teacher who never claimed deity") and force the honest question.

How do you argue for the resurrection of Jesus without first having to convince your audience the Bible is reliable? Gary Habermas's answer: don't argue from everything the New Testament says. Argue from only the small handful of historical facts that the great majority of scholars, including non-Christian and skeptical ones, already accept. Then ask which explanation best accounts for those facts.

Habermas spent more than four decades cataloguing the scholarly literature on the resurrection (over 3,400 publications) and tracking which claims about Jesus's death and what followed have near-unanimous acceptance. Five rose to the top. (1) Jesus was killed by Roman crucifixion. (2) His tomb was found empty shortly after His burial. (3) His disciples sincerely believed they encountered Him alive after His death. (4) The persecutor of the early Church, Paul of Tarsus, was abruptly converted by an experience he interpreted as the risen Jesus appearing to him. (5) Jesus's skeptical brother James was similarly converted and went on to lead the Jerusalem church and die for the claim.

The argument is then straightforward. The resurrection explains all five facts at once: the empty tomb (the body is gone because it was raised), the appearances (because He actually appeared), the conversions of Paul and James (because they actually saw Him). The leading naturalistic alternatives each fail on one or more of the five. Hallucinations don't happen to groups, don't empty tombs, and don't convert enemies of the movement. A stolen body doesn't explain the disciples' martyrdom or Paul's conversion. The swoon theory (Jesus survived) is medically untenable and doesn't explain Paul either. Late legend is ruled out by an early creed buried in 1 Corinthians 15:3-8 that dates the claim within a few years of the event.

What makes the approach distinctive is the rhetorical move: by accepting only the data the skeptic already accepts, it forecloses the easy deflection of "you're using Christian premises against me." The premises are the skeptic's own. The argument is abductive, inference to the best explanation, not a strict deductive proof. Its force comes from the combination of conceded premises and the explanatory failure of every naturalistic rival on the table.

Is Jesus the only way to be saved, or just one good way among many? Christianity has always answered: only way. Jesus said it about Himself: "I am the way, the truth, and the life; no one comes to the Father except through me" (John 14:6). Peter said it about Him: "there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved" (Acts 4:12).

That sounds arrogant in a pluralistic culture. The standard pushback: "How can you say one religion is right and all the others wrong? What about sincere Hindus, Buddhists, Muslims, and atheists who never heard of Jesus?"

The Christian answer comes in layers. First, exclusivity is about Christ's work, not Christian smugness. There is one fix for the human problem because there is one problem (sin alienating us from a holy God) and one fixer (the Son of God dying in our place). The exclusivity is built into the gospel itself, not bolted on by missionaries.

Second, Christian thinkers have long distinguished different views on who actually receives Christ's salvation. Restrictive exclusivism says only those who consciously trust Christ in this life are saved. Inclusivism says Christ saves everyone who is saved, but some of them may not have known His name (think of Old Testament saints, infants, people who never heard the gospel through no fault of their own). Pluralism says all religions are equally salvific. Christianity has consistently rejected pluralism. The debate between restrictivism and inclusivism stays inside the church.

Third, even on the strictest view, Christianity is not saying "people in other religions are bad." It is saying salvation runs through one channel, the cross, regardless of who is invited to that channel. Inviting more people is the church's job, not narrowing the channel.

Quick reply: "Exclusivity is about Christ being the only fix for the human problem, not about Christians being superior. Jesus is either the way or He isn't. Both can't be true."

The word gospel means good news. It is the announcement at the center of Christianity, and what makes it news rather than advice is that it is about something that already happened.

Paul gives the shortest version. "Christ died for our sins according to the Scriptures, He was buried, He was raised on the third day according to the Scriptures" (1 Corinthians 15:3-4). Three events, all historical, all public, with consequences that change everything else.

Here is the longer version in plain order. God made the world and made people in His image. People rebelled, and we are still rebelling. The Son of God became human in Jesus of Nazareth, lived a perfect life, willingly died on a Roman cross to take the penalty our sins deserve, was placed in a tomb, came back to life bodily three days later, and is now reigning as Lord. He has given the Holy Spirit to everyone who turns from their old way of life and trusts Him. The result is forgiveness now and resurrection life in a renewed creation later.

This is news, not advice. Religion in the general sense is mostly advice: do this, follow that, climb the ladder, balance the scales. The gospel is the announcement that the climb has already been made, by someone else, for you. The right response is not effort but trust, and that trust then changes everything that comes after.

A useful distinction: the gospel itself is one thing, and gospel presentations are another. The Bridge Diagram, the Romans Road, Four Spiritual Laws, Three Circles, all of these are teaching tools. They are useful for explaining the gospel to a particular person in a particular setting, but they are not themselves the gospel. The Bible itself preaches the gospel differently in different places. Peter at Pentecost (Acts 2) starts with the Jewish Scriptures and the resurrection. Paul in Athens (Acts 17) starts with the unknown God and creation. Both are preaching the same gospel; both are using the presentation that fits their audience.

The page below works through the historical-doctrinal content, the gospel-versus-presentations distinction, the five-pillar pedagogical structure (God, Man, Christ, Response, Result), and how different evangelical traditions package the same core message.

Paul calls it "of first importance" (1 Corinthians 15.3-4, "Christ died for our sins according to the Scriptures, and that He was buried, and that He was raised on the third day according to the Scriptures", NASB95). The gospel is not advice (do this); it is news (this happened, and here is what it means for you).

This page is a search-landing-page distinguishing the gospel itself from gospel presentations, and surveying the position-spread on what is essential content.

See G2098 - euangelion for the word study.

Maybe you have been asking questions about God for a while. Maybe today something clicked. Either way, you might be wondering: what do I actually do now?

Becoming a Christian is not about cleaning up your life first. It is not about joining a club or learning the right words. It is about turning to Jesus and trusting Him. God does the saving. Your part is to come to Him honestly.

This page walks through it in four simple steps, gives you a prayer you can pray, and tells you what comes next.