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Writer's pictureAR Press Staff

Why the Existence of God is Rational

Updated: Oct 24



In a world increasingly shaped by scientific discovery and skeptical worldviews, many people assume that belief in God is outdated or irrational. Yet, a careful examination of our minds—our ability to reason, think abstractly, and experience consciousness—points strongly toward the existence of a Creator. This idea, often referred to as the Argument from Reason, provides a compelling case for God’s existence, making belief in Him not only reasonable but also deeply rational.


1. Rational Minds from Non-Rational Processes?


One of the fundamental questions posed by Christian thinkers like C.S. Lewis is this: If the universe is solely the product of blind, non-rational forces, how did rational beings like us come to exist? According to atheistic evolution, life—including human consciousness—emerged from random processes without any intentional guidance. But this leaves us with a puzzling question: Why would these non-rational forces produce beings capable of logical thought?


C.S. Lewis likened it to the random splash of milk falling off a table. Would we expect that splash to contain useful information about how the carton fell? Similarly, if the evolutionary process has no goal or intention, it seems unlikely it would generate beings capable of abstract thinking and reasoning. The Christian worldview, however, offers a more fitting explanation: We were created in the image of a rational God, and therefore our ability to think rationally reflects His nature.


2. Evolution and Rational Thinking


Atheists argue that evolution, through natural selection, could have favored creatures with better cognitive abilities, increasing their survival chances. But this view encounters several challenges. Natural selection ensures survival, not truth or rational thought. A being doesn’t necessarily need accurate beliefs to survive—it just needs behaviors that promote survival. For example, a mouse might irrationally believe that a snake is friendly but still survive by instinctively fleeing. Rational thinking is not essential for survival, making it hard to explain how evolution alone could give rise to human reason.


Moreover, many living organisms—like bacteria and plants—function perfectly well without rational minds. If survival is possible without rational thought, why would evolution produce it at all?


3. The Nature of Consciousness


The existence of consciousness presents yet another challenge for atheistic explanations. Consciousness is the personal awareness of our thoughts, emotions, and surroundings. While materialists try to argue that consciousness arises from brain activity, it remains fundamentally different from anything purely physical. Conscious experiences, often called qualia, are deeply personal. No one can experience your pain or see the world exactly as you do. This subjective nature of consciousness is hard to reconcile with the idea that we are merely made of atoms and molecules.


Even atheistic philosophers like Thomas Nagel have admitted the difficulty of explaining consciousness. In his essay, What Is It Like to Be a Bat?, Nagel argues that no amount of physical knowledge about a bat’s brain can fully explain what it is like to be a bat. Consciousness remains a mystery that material explanations alone cannot solve.


4. A Biblical Answer to Rationality and Consciousness


The Christian faith provides a coherent and satisfying explanation for our rationality and consciousness. Genesis teaches that human beings were created in God’s image (Genesis 1:27). This means that we reflect God’s nature, including His rationality. God, who is all-knowing and logical, designed us with the ability to think, reason, and seek truth.


This perspective makes sense of why we can understand the world and make sense of abstract concepts like justice, love, and beauty. It also explains why our identity remains constant over time, even though our bodies change. According to Christianity, we are not just physical beings; we are body and soul. Our soul, an immaterial part of us, grounds our personal identity and allows us to think rationally and experience consciousness.


5. The Limits of Atheism


Atheists often struggle to explain the origins of rationality and consciousness. Philosopher Daniel Dennett has gone so far as to claim that consciousness is an illusion—an argument that has been widely criticized. After all, if consciousness were an illusion, we would need to be conscious to experience that illusion, making his claim self-contradictory.


Many atheists also assume, without sufficient evidence, that consciousness will eventually be explained as an emergent property of complex physical systems, like how water feels wet. However, rational thought and consciousness possess qualities that cannot be reduced to physical matter. The Christian view provides a more satisfying answer: Rationality has existed from the beginning because God, a rational being, created the world and designed human beings to reflect His nature.


  1. Faith and Reason in Harmony


Belief in God is not a leap into irrationality. On the contrary, it is a reasonable response to the realities of our minds and consciousness. Rationality and consciousness fit naturally within a theistic framework, where a personal God designed the world with purpose and intentionality. The Christian worldview explains not only why we can think and reason but also why our thoughts align with reality.


Atheism, with its insistence on a purely material universe, struggles to account for the very faculties that make us human. The more we explore the nature of our minds, the more we find that belief in God is not just compatible with reason—it is the most rational conclusion.



1. Lewis, C.S. Miracles: A Preliminary Study. HarperOne, 2001.

2. Nagel, Thomas. What Is It Like to Be a Bat? The Philosophical Review, vol. 83, no. 4, 1974, pp. 435–450.

3. Nagel, Thomas. Mind and Cosmos: Why the Materialist Neo-Darwinian Conception of Nature Is Almost Certainly False. Oxford University Press, 2012.

4. Dennett, Daniel. Consciousness Explained. Back Bay Books, 1992.

5. Reppert, Victor. C.S. Lewis’s Dangerous Idea: In Defense of the Argument from Reason. InterVarsity Press, 2003.

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