Christianity and Science
Christianity and science are often presented as competitors. One explains the world through faith; the other explains it through evidence. One belongs to churches and ancient books; the other belongs to laboratories and universities. According to the popular version of the story, science advances by pushing religion steadily backward until eventually there will be nothing left for God to explain.
That story is much too simple.
There have certainly been conflicts between Christians and scientific ideas, and Christians have sometimes resisted scientific conclusions for bad reasons. Scientists and philosophers have also sometimes treated philosophical naturalism as though it were a scientific discovery. Neither mistake helps the discussion. Scientific theories can be wrong. So can our interpretations of Scripture. Recognizing both possibilities gives Christians a much better starting point for thinking seriously about science.
What Science Actually Does
Science investigates the natural world. Through observation, experimentation, measurement, mathematical modeling, and repeated testing, scientists attempt to understand how physical reality behaves. The success of that enterprise is difficult to exaggerate. Modern medicine, electronics, aviation, communications, genetics, astronomy, and countless other achievements depend upon scientific investigation.
Christians have no theological reason to fear that process. If God created the natural world, studying that world is not an investigation of something opposed to God. It is an investigation of creation.
Problems arise when science is asked to answer questions beyond the limits of its methods. Science can investigate physical processes associated with the beginning of the universe. It cannot conduct an experiment demonstrating that nothing beyond the physical universe exists. Science can investigate neural activity associated with human thought. Whether human consciousness is nothing but neural activity is a philosophical question. Science can study how human moral judgments develop, but determining whether objective moral truths actually exist requires more than measuring behavior.
That distinction is important because methodological naturalism and philosophical naturalism are not the same thing. Scientists normally look for natural explanations when conducting scientific research. That is a useful methodological rule. Philosophical naturalism goes much further and claims that nature is all that exists.
The first is a method.
The second is a worldview.
Putting the word science in front of a philosophical assumption doesn’t magically turn it into science.
Christianity Did Not Invent a War Against Science
The relationship between Christianity and the development of modern science is complicated, but it cannot reasonably be reduced to a centuries-long war between faith and reason. Christians participated extensively in the development of modern scientific thought, and many major figures in the history of science understood their investigation of nature within a theological framework.
Johannes Kepler saw his astronomical work as uncovering the mathematical order of God’s creation. Robert Boyle combined experimental science with serious Christian commitments. Isaac Newton wrote extensively about theology as well as physics and mathematics, although some of his theological beliefs departed significantly from orthodox Christianity. Gregor Mendel, whose experiments became foundational for genetics, was an Augustinian friar.
None of this proves Christianity true. A scientific discovery does not become Christian because its discoverer believed in God. But it does undermine the simplistic claim that science arose by escaping from Christianity.
The historical relationship includes cooperation, tension, controversy, institutional politics, theological mistakes, and scientific mistakes. History is usually less convenient than slogans.
Galileo and the Church
No episode symbolizes the alleged conflict between Christianity and science more powerfully than Galileo’s confrontation with church authorities. Galileo supported heliocentrism—the view that Earth moves around the sun—at a time when geocentric interpretations remained deeply established.
The controversy involved scientific evidence, biblical interpretation, ecclesiastical authority, personalities, and politics. Some Christians appealed to biblical passages describing the sun as moving or the Earth as established. Eventually heliocentrism prevailed, and Christians learned an important interpretive lesson: biblical language describing the world from ordinary human observation does not necessarily provide a technical scientific description of the physical system.
We still speak this way. We say that the sun “rises” without committing ourselves to geocentrism.
Galileo should therefore remain a warning to Christians. Scripture is authoritative, but our interpretation of Scripture is not identical to Scripture itself. When an interpretation depends upon a claim about the natural world, evidence from the natural world may reveal that the interpretation needs reconsideration.
That does not mean every biblical doctrine should be revised whenever a scientific theory changes. It means Christians should distinguish carefully between what Scripture actually teaches and what they have assumed Scripture teaches.
Genesis and the Age of the Earth
Few issues have generated more tension between some Christians and modern science than the interpretation of Genesis 1. Christians agree that God is Creator, but they disagree considerably about how the creation narratives should be understood in relation to scientific chronology.
Young-earth creationists generally understand the creation days as ordinary days and place creation thousands rather than billions of years ago. Old-earth creationists accept the great antiquity of the universe and Earth while maintaining varying degrees of direct divine creative activity. Other Christians understand the days of Genesis through literary, analogical, framework, or other interpretive approaches.
Modern scientific estimates place the universe at roughly 13.8 billion years old and Earth at roughly 4.5 billion years old. Those conclusions arise from multiple areas of investigation rather than from a single experiment or dating technique.
A Christian evaluating those conclusions should therefore ask two separate questions: What does the scientific evidence indicate? and What does Genesis require us to believe?
Those questions overlap, but they are not identical.
A Christian should not manipulate scientific evidence merely to protect a preferred interpretation of Genesis. Neither should someone manipulate Genesis simply because a particular interpretation is culturally unfashionable. Both Scripture and creation deserve careful investigation.
Evolution
Evolution is another subject where terminology matters enormously. The word can refer to several related but distinguishable claims: changes in populations over generations, common ancestry, natural selection, genetic mutation, and broader theories concerning the diversification of life.
Christians hold several positions. Some reject large-scale common ancestry and argue for separate acts of creation. Some accept substantial evolutionary development while believing God intervened at important points in life’s history. Others accept evolutionary creation, believing that God providentially used evolutionary processes to produce biological diversity.
The theological questions become especially significant when the discussion reaches human beings. Scripture presents humanity as uniquely made in the image of God and treats Adam and Eve as foundational to the biblical account of human sin and redemption. Christians who accept evolutionary accounts therefore have to consider how those claims relate to human origins, the image of God, Adam, the Fall, sin, and death.
Those are genuine theological questions. Pretending they do not exist does not resolve them.
But neither should Christians make weak scientific arguments merely because those arguments appear useful against evolution. If an argument is weak, let it go. Christianity does not become stronger when Christians continue repeating claims that can easily be shown to be inaccurate.
The Big Bang and Creation
The Big Bang is sometimes described as an alternative to creation, but the two claims address different levels of explanation. Big Bang cosmology attempts to describe the early development of the universe from an extremely hot, dense state. The doctrine of creation concerns why anything exists at all and ultimately grounds the existence of the universe in God.
A physical account of the universe’s early development would not by itself explain why there is a universe, why physical laws exist, or why those laws have the properties they do.
Imagine explaining a painting by identifying the chemical composition of its pigments. That information might be completely correct while leaving unanswered questions about the painter. Different kinds of explanations can coexist without competing.
Christians should also resist the temptation to say, “The Big Bang proves Genesis.” It doesn’t. Scientific cosmology changes as evidence and models develop, and Christian theology should not be tied unnecessarily to one particular scientific model.
If cosmology changes tomorrow, Genesis will still begin, “In the beginning God created.”
Fine-Tuning
Modern physics has generated considerable discussion about the apparent fine-tuning of the universe. Various physical constants and initial conditions appear to fall within ranges compatible with complex chemistry and life. If some of those values were significantly different, a life-permitting universe might not develop.
Theists argue that this is evidence consistent with intelligent design. Critics propose alternatives, including selection effects, deeper physical necessity, or some form of multiverse in which many universes exist with different conditions.
Fine-tuning should not be overstated. It is not a laboratory demonstration that God exists. But neither should it be dismissed merely because the conclusion might have theological implications. The relevant question is comparative: which explanation best accounts for the conditions we observe?
A multiverse, even if established, would not automatically eliminate God. It would simply move the discussion to a larger physical system and raise further questions about why that system exists and has universe-generating properties.
The “God of the Gaps”
One of the weakest approaches to science and apologetics is to place God primarily in whatever science has not yet explained.
We don’t understand this phenomenon.
Therefore, God did it.
The problem is obvious. If a natural explanation is eventually discovered, God appears to retreat with every scientific advance. This produces the familiar “God of the gaps,” whose territory consists primarily of human ignorance.
Christian theology makes a much larger claim. God is not merely responsible for things scientists cannot explain. God is the Creator and sustainer of the entire reality scientists can explain.
Understanding gravity does not eliminate God. Understanding genetics does not eliminate God. Understanding stellar formation does not eliminate God. Natural explanations describe processes within creation; they do not necessarily provide an ultimate explanation for the existence of creation itself.
God does not become unemployed when we discover how something works.
Can Science Explain Everything?
Science is enormously powerful precisely because its investigation is focused. But the success of a method within its proper field does not mean that the method can answer every meaningful question.
Science can describe chemical reactions occurring in a human brain while someone looks at a painting. It cannot tell us whether the painting is beautiful simply by measuring those reactions. Science can describe what happens biologically when someone murders another person. It cannot establish through a microscope that murder is morally wrong.
Questions about meaning, moral obligation, logic, consciousness, beauty, purpose, and why anything exists at all are not automatically meaningless because they cannot be placed inside a test tube.
This does not create a license to invent answers without evidence. Philosophy and theology require reasoning too. It simply recognizes that different questions require different methods.
Trying to answer every question scientifically is itself not a scientific conclusion. You cannot conduct an experiment proving that only experimentally provable claims are meaningful.
When Christians Get Science Wrong
Christian apologetics loses credibility when Christians present questionable scientific claims with more confidence than the evidence warrants. A dramatic quotation gets repeated without checking its source. A scientific paper is cited for a conclusion its authors never reached. A scientist’s uncertainty about one part of a theory is presented as though the entire theory has collapsed.
That may win applause inside an audience already convinced of the conclusion, but it is terrible apologetics.
Christians should be particularly careful with arguments that begin, “Scientists don’t want you to know…” Sometimes institutions behave badly and scientific communities can certainly develop orthodoxies of their own. But disagreement with a scientific consensus is not evidence of persecution, and consensus itself is neither infallible nor meaningless.
Evidence has to be examined on its merits.
Truth doesn’t need us to protect it from evidence.
When Scientists Make Philosophical Claims
The same standard should apply in the other direction. Expertise in biology, chemistry, or physics does not automatically make someone an expert in metaphysics, theology, ethics, or philosophy of religion.
A scientist is perfectly entitled to be an atheist. But when a scientist says that science has demonstrated that God does not exist, the statement has moved beyond experimental science into philosophy.
That philosophical argument may still be worth considering. It simply should be identified accurately.
The white laboratory coat does not confer philosophical infallibility any more than the clerical collar confers scientific expertise.
Everybody has homework.
Christianity Makes Claims About Reality
Christianity cannot retreat into a protected realm of private spirituality whenever evidence becomes uncomfortable. It makes claims about reality. God exists. The universe is created. Human beings possess unique significance. Jesus lived in history. He was crucified. Christians claim that He rose bodily from the dead.
Some of those claims intersect with history and the natural world and can therefore encounter evidence for or against particular interpretations.
That is not a threat Christianity should fear.
If Christianity is true, Christians should expect truth discovered through legitimate investigation ultimately to be compatible with truth revealed by God. That does not guarantee that Christians will always understand either one correctly. Scientific models can be mistaken, theological interpretations can be mistaken, and sometimes we simply do not yet have enough information to know how everything fits together.
There is nothing intellectually embarrassing about saying, “I don’t know.”
Faith and Science Need Not Be Enemies
Christianity and science ask some overlapping questions, but they are not interchangeable disciplines. Science investigates the mechanisms and regularities of the natural world. Christianity makes broader claims about the source, meaning, purpose, and destiny of that world.
Conflict can occur when either side exceeds what its evidence establishes. Christians can mistake an interpretation of Scripture for an unquestionable scientific proposition. Materialists can mistake a philosophical commitment to naturalism for the conclusion of a scientific experiment.
A better approach is neither fear nor surrender.
Study the science carefully. Study Scripture carefully. Learn enough philosophy to recognize when someone has quietly changed subjects. Admit uncertainty when uncertainty exists. Abandon bad arguments when the evidence requires it.
And don’t be frightened by discovery.
If God is the Creator of reality, Christians have no reason to fear learning more about what He created.