The existence of God is an enduring and popular philosophical problem. Many arguments claiming to prove the existence of God have been proposed througout the centuries, often on the basis of some feature of the natural world. There have also been attempts to disprove the existence of God, which is a more complex task. Consider how much easier it is to establish that there is a black swan somewhere on the Earth compared to establishing that there isn’t one. G.K. Chesterton made this point: “Atheism is the most daring of all dogmas, for it is the assertion of a universal negative.”¹

Popular arguments for the existence of God include the cosmological argument, the ontological argument, the moral law argument, and the argument from Design. The argument from Design is a more general version of the narrower perspective about irreducible complexity that forms the core of the Intelligent Design movement. Each of these arguments supports a certain belief in a creator. The response to many of these arguments, however, is: 

“If God created the world, what created God?”

This is a reply that requires serious consideration. It suggests that certain arguments for God’s existence only push the question of beginnings one step farther back. It also suggests that any God complex enough to account for all of creation would necessarily be complex enough to require an explanation.  Richard Dawkins is one of the strongest proponents of this argument.

An Answer From Doctrine?

In many faiths, God’s origin is straightforward. Christian doctrine teaches that God is eternal and thus had no beginning. The Psalms speak clearly about God’s eternal nature, affirming, but never defending God’s existence:

“Before the mountains were born or you gave birth to the earth and the world, even from everlasting to everlasting, you are God.” ²

“For a thousand years in Your sight are like yesterday when it passes by, or as a watch in the night.” ³

These verses, and many others like them, highlight the complexity of God’s relation to time. Theologians have debated the relationship of God to time for centuries and no doubt will continue to do so. It is a question that we probably cannot answer. In one thoughtful response, God is the creator of time itself, and thus exists outside of time seeing all of history at once. Verses like those above are often used to support this view. On the other hand, this view is often critiqued by Biblical scholars including Clarke Pinnock, John Sanders and Gregory Boyd⁴, who point out that God is portrayed in scripture as acting in time. For example, when God is negotiating the fate of Sodom and Gomorrah with Abraham (Genesis 18), or lamenting having created humans at the time of Noah (Genesis 6:5-8), God certainly seems to be in time and responding to the unfolding course of events. But of course, given the difficulty our time-limited minds have in grasping this philosophical problem, there is no compelling reason that God could not be both outside of time and capable of acting within it.

An Answer From Definition?

Answers from religious doctrine are rarely adequate for nonbelievers. In fact, many fervent believers in God reject the argument about God’s timelessness because even timeless beings need explanations for their existence. But if God is the creator of all things, and yet also requires cause, we face an infinite regress of causes. The only way to avoid this infinite regress problem is to state — as Christian theology has always done — that God is the first cause and is entirely self existent, meaning the reason for God’s existence is contained within the very definition of God.

While this viewpoint certainly may be attractive, it still fails to convince skeptics who are more likely to favor the idea that the universe contains within itself the reason for its own existence. If that could be true of God, why couldn’t it be true of the universe? There is certainly reason to be skeptical about the common sense intuition that everything must have a cause or that everything must have a reason to be as it is. This perennial assumption has been challenged by the physics of the 20th century that uncovered a mysterious quantum world where things often do not appear to have reason to be the way they are.

The common sense assumption that everything must have a cause or a reason to be as it is also suffers from what is called the fallacy of composition. This fallacy comes about when we assume that properties of the parts apply to the whole. For example, just because every member of the human race has a mother, we cannot infer that the human race itself has a mother. Similarly, a collection of spherical things would not itself have to be spherical. In discussions about the origins of the universe, we would say that just because every individual part of the universe has a cause, that does not mean that the entire universe has a cause.

The realization that our universe had some sort of beginning has opened up exciting new conversations about origins. In some ways, a universe with a beginning seems to beg for a cause. But if the universe came into being from nothing , it becomes deeply problematic to speak of anything having caused the universe to exist. Some cosmologists would argue that our universe is the result of an uncaused quantum fluctuation. Such fluctuations do not have causes in the traditional sense, so they argue this does away with our universe needing a cause. But there is a significant problem that  the vacuum that fluctuates is not nothing. Quantum vacuums — which are what you get when you remove from space all the particles and energy — are real. They have activity, laws and rules. Our universe may have fluctuated into existence from such a vacuum, but the vacuum remains unexplained.

Cosmologist Lee Smolin suggests in Life of the Cosmos, that black holes can give birth to new universes.⁵ He proposes that our present universe emerged out of a black hole in some other “meta-universe.” And perhaps our universe is presently birthing new universes. Such a process, while clearly speculative, provides a caution against extrapolating from common sense notions of causality to philosophical conclusions about the nature of all of reality.

An Answer From Plausibility

The difference between the theist and atheist positions on this topic is that by assuming that everything — including the universe — has to have a cause, then the atheist is left with a dilemma of what or who that first cause might have been. For the theist, the answer is God, but a satisfactory reason must be found why God should be exempt for the need for a cause. Such a response is available through the Augustinian concept that God is not limited in space and time, and  therefore the argument of needing a first cause loses its power.

On the other hand, if not everything needs to have a cause, the theist and atheist have no grounds for arguing this part of their case.

But the argument can be reframed in a way that is more sensitive to postmodern intuitions about causation and the importance of starting points. Suppose as a religious believer you ask the question, “What kind of a universe is most compatible with my belief in an eternal God?” In this case the response affirms but does not prove the reality of God. The universe that we experience appears to have had a beginning; it appears to be finely tuned for life; it appears to have a place for love and purpose. These appearances affirm as plausible your prior belief in God.

See "What is the 'fine-tuning' of the universe, and how does it serve as a 'pointer to God'?"

 

Now suppose you start from the atheist assumption. In this case the universe must not really be as it appears. It cannot have a real beginning, be tuned for life and love, and purpose can’t be anything other than illusory epiphenomena — the curious byproducts of chemistry and physics. The whole picture has a claustrophobic bleakness.

Bertrand Russell, one of the most brilliant and ruthlessly honest atheists of the 20th century, captured this sense of despair in A Free Man’s Worship:

“That man is the product of causes which had no prevision of the end they were achieving; that his origin, his growth, his hopes and fears, his loves and his beliefs, are but the outcome of accidental collocations of atoms; that no fire, no heroism, no intensity of thought and feeling, can preserve an individual life beyond the grave; that all the labors of the ages, all the devotion, all the inspiration, all the noonday brightness of human genius, are destined to extinction in the vast death of the solar system, and that the whole temple of man's achievement must inevitably be buried beneath the debris of a universe in ruins – all these things, if not quite beyond dispute, are yet so nearly certain that no philosophy which rejects them can hope to stand. Only within the scaffolding of these truths, only on the firm foundation of unyielding despair, can the soul's salvation henceforth be safely built.“ ⁶

In contrast to this view, the theist can affirm that the wonders encountered in the world are real, that they belong, and are a reflection of the glory of the creator whose mysterious power upholds everything.

Conclusion

The world disclosed by modern science is far subtler and nuanced than the world in which philosophers and theologians have lived for the past few centuries while formulating their arguments about the mysterious relationship between God, the physical world, time and causality. Nevertheless, no development in contemporary science poses a particular challenge to the view that God is creator. And some developments, like the discovery of fine-tuning in the physical laws, are supportive of traditional affirmations. The common-sense assumptions that have historically undergirded this entire discussion, however, need reconsideration in the face of recent scientific developments. We must be intellectually humble in making claims about God as creator. But we can also state confidently that denials that God is creator are fraught with even more unresolvable difficulties and ultimately provide a far less satisfactory grounding for a worldview in which meaning and purpose play important roles.

Many voices today say that science and Christianity are opposed to each other. Some atheists claim that science has debunked religion and superstition of all forms. Many in the general public think that the church is anti-science. And within the church, science is often portrayed as challenging important Christian beliefs. None of these voices, however, hint at the positive and fruitful relationship between Christianity and science. Here we review several ways to view the relationship between science and Christianity.

Are Christianity and science at war?

When creation and evolution clash in a courtroom, the daily news fills up with stories suggesting that there is some profound conflict between science and Christianity. Inevitably, someone mentions the historical incident of Galileo. Galileo was charged with heresy by the church in 1633 for teaching that the Earth orbits the Sun. From Galileo to textbook battles, the hasty conclusion is that science and Christianity are engaged in an endless debate, fundamentally opposed to each other.

For a review of Galileo and other historic interactions between science and Christianity, see “Christianity and Science in Historical Perspective” by Ted Davis (blog series, PDF) and “The Galileo Affair: Emblematic or Exceptional?” by Matt Rosano (blog)

Yet the Galileo incident and today’s conflicts are often about much more than the particular claims of science or faith. Personalities, politics, and culture wars all come into play when drawing the battle lines. In many instances, science and scientists are not themselves in conflict with Christian belief. In fact, Galileo himself was a Christian who believed “that the glory and greatness of Almighty God are marvelously discerned in all His works and divinely read in the open book of Heaven”¹ Many scientists then and now² are Christians who see no conflict between their scientific work and their faith. Most things studied via the natural sciences—such as the migration patterns of birds or the interior of atoms—do not raise any theological or Biblical concerns.

The “warfare” model, then, is not very helpful for understanding evolution and Christianity, since it assumes conflict from the start. A few particular areas of scientific study—like the big bang and evolution—do raise concerns for Christians, but most of the BioLogos website (see Questions by Category on the right) is devoted to showing that evolution and Christianity are not truly at war. In the rest of this answer, we’ll explore other models for the working relationship between science and Christianity.

Mark Noll, a leading historian and evangelical, gives 16 reasons why the warfare model is a mistake. (blog series)

Are Christianity and science completely separate?

One way to erase the conflicts between science and Christianity is to view them as entirely separate endeavors, with different purposes, methods, and bodies of knowledge. This view emphasizes that science is a system of knowledge about the world and its behavior, whereas religion is about morality, God, and the afterlife. Thus, Christianity and science cannot conflict, because they are addressing different sorts of questions.³

This model has some weaknesses (see below), but it does help us understand some important aspects of the relationship. Many apparent conflicts between science and religion occur because of a lack of understanding of the fundamental differences between the two. When someone claims that the Bible answers a scientific question, and another claims that science answers a question about God, the conflict immediately flares up. Many conflicts become enflamed because participants forget that Christianity and science do generally address very different questions.

This model also reminds us that science is not the only source of knowledge. There are many sorts of questions that simply do not fall under the domain of science. Borrowing an example from the Rev. John Polkinghorne, there is more than one answer to the question of “Why is the water boiling in the tea kettle?”⁴ The scientific answer might be “the water is boiling because at this temperature it undergoes a phase transition from liquid to vapor.” Another acceptable, though nonscientific, answer is “the water is boiling because I put the kettle on the stove.” A third answer might be “the water is boiling because my prayer partner is coming over for tea.” None of the answers is wrong; rather, each gives a different perspective on the question. The scientific answer does not tell the whole story. Science cannot answer questions like “Is my friend trustworthy?” or “Is this poem well written?” Science is tremendously successful in understanding the physical world, but we should let that tempt us to think it can be used to understanding everything in life.

Artist Mark Sprinkle writes on the importance of music and poetry in understanding God’s world.

Science cannot answer the question “Does God exist?” Some people argue that God’s existence is actually a scientific claim that could be tested like a chemical reaction. But science studies the natural world, not the supernatural. No amount of scientific testing or theorizing could prove or disprove the existence of a supernatural creator. The claim that “God exists” is a metaphysical one, not a claim about nature or physical laws

Though science cannot prove or disprove God’s existence, it can provide clues that support belief in God. See “What is the fine-tuning of the universe?” and “On what grounds can one claim that the Christian God is the creator?”

This model also reminds us that the Bible is not the only source of knowledge. The Bible is silent on most of the topics that concern scientists, like protons, photosynthesis, penguins, and Pluto. The Bible is not a science textbook, in the same way that it is not a textbook of plumbing, agriculture, or economics. Instead, God teaches us about these things through his general revelation in the created order.

However, this model has some significant weaknesses. It isolates religion from science, which can be a first step in marginalizing religion from public discourse. By defining religion and science as separate, this model doesn’t help us understand the interactions they do have, either negative or positive. The model also sets science on its own, apart from religion, while Christians believe that no part of our lives is outside of our walk with God.

Science and Christianity interact, correcting and enhancing each other

While many questions can be clearly categorized as “science” questions or as “Bible” questions, other questions are on the boundary. For topics like evolution, medical ethics, and climate change, we need to consider both science and faith when seeking out God’s truth. For such complex questions, we need all the knowledge and wisdom we can get, rather than handicapping ourselves by looking only to science or only to the Bible. If we look to only one or the other, we will get a distorted view of the issue. As Pope John Paul II wrote,

Science can purify religion from error and superstition; religion can purify science from idolatry and false absolutes. Each can draw the other into a wider world, a world in which both can flourish.⁵

God reveals himself in the book of Scripture and the book of Nature. To learn more about God and his work, we study both books. When one book is confusing or ambiguous, insights from the other book can help us understand it. In both revelations, we look for the underlying truth of who God is and how he made the world. Rev John Polkinghorne wrote, “Science and theology have things to say to each other, since both are concerned with the search for truth attained through motivated belief.”⁶

For more on God’s two revelations, see “Can Science and Scripture Be Reconciled?”

Faith can have a positive impact on science by guiding the practical application of scientific discoveries. With the rapid advance of science and technology, many ethical questions are facing our society. Development of safe nuclear energy is not far from the development of nuclear weapons, new medical imaging techniques save lives but are too expensive for the poor, and DNA testing improves treatment of genetic disorders at the risk of the results being misused.⁷ To address these complex questions, we need both science and the moral grounding of religion. We can’t just give a quick answer from the Bible without studying the scientific complexities, nor can we look to science alone to guide ethical decisions. Christianity and other religions lay the groundwork for the moral standards that are essential for the appropriate use of science and technology.

Science also has a positive impact on the faith of the believer. The Bible teaches that “The heavens declare the glory of God” (Psalm 19:1). Christians see God’s glory when looking up at the stars, and in colliding galaxies seen through a telescope. God’s glory is revealed in the beautiful symmetry of a maple leaf, and in the complex biochemical activity inside each cell in that leaf. Science and technology have shown us much more of God’s creation than was known in Biblical times, revealing more and more of God’s glory.

See “Science as an Instrument of Worship” by Jennifer Wiseman (PDF) (blog series)

Finally, Christianity can provide the belief framework for how and why we do science. Christians need not set aside their faith when they sit down to do science. Read on to the next question for more.