In an important sense, yes, science requires faith. Science is one of the most powerful tools humans have ever developed, but it rests on assumptions that science itself can’t prove: that the outside world is real, that nature is orderly, that logic works, and that our minds can be trusted. That’s not a knock on science. It’s a reminder that every scientist works within a worldview, and some worldviews explain those assumptions far better than others.
What Science Does Well, and What It Can’t Do
Let’s start by giving science its due. Medicine, space travel, clean water, and the phone in your pocket all exist because people carefully observed the world, tested ideas, and followed the results. Christians should celebrate that. The Bible actually treats curiosity about the world as something noble.
Proverbs 25:2 It is the glory of God to conceal a matter; to search out a matter is the glory of kings.
Searching out the hidden details of creation honors the God who made it. But science has limits. It’s designed to answer questions about how the physical world works. It can’t measure whether something is morally right, whether your life has meaning, or whether love is more than chemistry. Those are real questions, but they need other tools.
Some people go further and say science is the only reliable path to truth. That view, sometimes called scientism, has a problem: the statement “only science gives us knowledge” can’t be proven by science. There’s no experiment that can test it. It’s a philosophical belief, held by faith, about what science can do.
Four Assumptions Behind Every Experiment
Before a scientist ever sets up an experiment, she has already made several commitments. First, she assumes there’s a real world outside her own mind. Second, she assumes nature is orderly and consistent, so that the results she gets today will hold tomorrow and on the other side of the planet. Philosophers have pointed out for centuries that we can’t prove the future will resemble the past without assuming it in the first place.
Third, she relies on the laws of logic, such as the principle that something can’t be both true and false in the same way at the same time. Science uses logic constantly, but it doesn’t invent logic or prove it. Fourth, she trusts that her senses and her reasoning give her an accurate picture of reality. All four assumptions are reasonable. But none of them are scientific discoveries. They’re the foundation science stands on.
The Bible gives a reason to expect that kind of dependable order. In one passage, God compares the reliability of his promises to the fixed patterns of the universe.
Jeremiah 33:25-26 This is what the Lord says: ‘If I have not made my covenant with day and night and established the laws of heaven and earth, then I will reject the descendants of Jacob and David my servant and will not choose one of his sons to rule over the descendants of Abraham, Isaac and Jacob. For I will restore their fortunes and have compassion on them.’”
God’s point was about his faithfulness to his people, but notice what he assumes: the “laws of heaven and earth” are as dependable as he is, because he established them. Nature is orderly because a faithful Creator made it that way.
Can a Mind Built Only for Survival Be Trusted?
The fourth assumption raises an especially interesting question. If our brains are nothing more than the product of blind, unguided processes, they were shaped to help us survive, not necessarily to find truth. A belief can be useful without being accurate. Charles Darwin himself wrote in a letter that he sometimes had a “horrid doubt” about whether the convictions of a mind developed from lower animals could be trusted at all.
Some philosophers, like Alvin Plantinga, have argued that this creates a real problem for a purely materialist worldview. If you can’t trust your reasoning, you can’t trust the reasoning that led you to materialism either. Christianity offers a different starting point. Our minds can grasp truth because they were made by a rational God, in his image, to know him and his world.
Colossians 1:16-17 For in him all things were created: things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things have been created through him and for him. He is before all things, and in him all things hold together.
Paul says that everything “holds together” in Christ. That’s a theological claim, not a scientific one, but it explains why the universe hangs together in ways we can understand, and why our minds are fit to understand it.
Science Fits Comfortably in a Christian World
It’s no accident that many of the pioneers of modern science, like Johannes Kepler, Robert Boyle, and Isaac Newton, were devout believers. They expected nature to follow laws because they believed in a Lawgiver. Studying creation was a way of exploring the mind of its Maker.
Psalm 19:1-2 The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they reveal knowledge.
The universe “reveals knowledge” because Someone put it there to be found. If you’re a skeptic, you don’t have to accept that conclusion today. But it’s worth asking which worldview best explains why science works at all. For more on how worldviews shape the way we see everything, read What Is a Biblical Worldview?
The Takeaway
Does science require faith? Yes, in the sense that science depends on trusting a real, orderly, knowable world and reliable minds. Science can’t prove those things, but it can’t work without them. Christianity explains why they’re true: a rational God made a rational world and gave us minds to explore it.
