Does God exist?
The existence of God is the most consequential question a human being can ask. If God exists, everything changes — how you live, how you die, what you owe, and what you can hope for. If he doesn’t, that changes everything too. Either way, the question deserves a straight look, not a comfortable assumption in either direction.
Most people have an opinion on whether God exists. Fewer have actually sat down with the arguments — for and against — and thought them through. This post does that. Five serious arguments for God’s existence. Four serious objections against it. Honest assessment of each. Then what to do with it all.
There’s a difference between a man who doesn’t believe in God because he’s thought it through and a man who doesn’t believe because he never got around to thinking about it. Likewise, there’s a difference between a man who believes in God because the evidence led him there and a man who believes because he was raised that way and never asked a hard question.
Neither faith nor doubt earns credit just for existing. What matters is whether you’ve actually looked.
This post is for both kinds of men — the skeptic who wants a fair hearing and the believer who wants to know what he’s actually standing on. We’re going to lay out the main arguments philosophers and theologians have made for God’s existence, then lay out the strongest objections atheist thinkers have raised, and then assess where the weight of the evidence actually falls.
No strawmen on either side. The arguments for God deserve their strongest form. The objections against him deserve their strongest form. Then you decide.
Ground Rules Before We Start
A few clarifications up front, because the conversation goes off the rails quickly without them.
These arguments are about whether God exists, not whether a specific religion is true. The cosmological argument, if it works, gets you to a Creator. It doesn’t get you directly to the God of the Bible, the Allah of Islam, or the Brahman of Hinduism. Additional arguments are needed to get from “a Creator exists” to “this Creator is the Christian God.” That’s a subsequent step — important but separate.
Proof vs. evidence. Almost nobody claims these arguments constitute mathematical proof. What they claim is that they constitute evidence — reasons to think God is more likely than not. The same standard applies to the objections: they are evidence against, not proof of absence.
The burden of proof. Both theists and atheists make claims. “God exists” is a claim requiring support. “God does not exist” is also a claim requiring support. “I don’t know” (agnosticism) is the honest position of a man who has weighed the arguments and found them inconclusive. All three positions are on the table here.
With that, let’s look at the arguments.
Five Arguments for God’s Existence
The universe exists. It contains matter, energy, space, and time. The question is whether the universe had a beginning — and modern cosmology has answered that question. The Big Bang, confirmed by multiple independent lines of evidence, establishes that the universe began approximately 13.8 billion years ago. Before the Big Bang, there was no matter, no energy, no space, and no time as we know them.
Whatever begins to exist has a cause. The universe began to exist. Therefore, the universe has a cause. And whatever caused the universe must be outside the universe — uncaused, timeless, spaceless, and immensely powerful. Philosophers call this an uncaused first cause. Theists call it God.
The argument doesn’t rely on the Bible. It relies on a philosophical principle so basic that virtually every tradition in human history has accepted it: nothing comes from nothing. If the universe had a beginning, something caused it — and that something cannot itself be part of the universe it caused.
The physical constants that govern the universe — the gravitational constant, the cosmological constant, the ratio of electromagnetic force to gravity, the mass of electrons and protons — are calibrated to values that permit the existence of complex matter, chemistry, and life. The margins are not approximate. They are precise to degrees that strain ordinary comprehension.
Physicist Roger Penrose calculated that the entropy of the early universe had to be fine-tuned to one part in 10 to the power of 10 to the power of 123 — a number so large it has more zeros than there are atoms in the observable universe. If the cosmological constant alone were off by one part in 10120, the universe would either have collapsed immediately or expanded too fast for any structure to form.
There are three explanations: chance, necessity, or design. “Chance” at these odds is functionally equivalent to no explanation at all — it just labels the improbability without accounting for it. “Necessity” requires that the constants could not have been otherwise, which is not supported by current physics. “Design” — a mind that chose the values — accounts for the data without requiring a miracle of luck.
When we say that torturing children for entertainment is wrong — not just distasteful, not just evolutionarily disadvantageous, but actually, objectively wrong — we are making a claim that goes beyond personal preference and cultural convention. We are saying there is a moral fact that holds regardless of what anyone thinks or feels about it.
If there is no God, there is no objective moral standard outside of humanity. Morality becomes evolutionary programming, cultural consensus, or individual preference — all of which are descriptive (what people do believe) rather than normative (what people ought to believe). On atheism, the Nazi’s belief that Jews were subhuman is not objectively wrong — it’s just different, and we happen to strongly disagree with it. Most atheists rightly find this conclusion intolerable, which is evidence that they don’t actually believe it.
If objective moral facts exist — if some things are really right and really wrong, regardless of what anyone thinks — then there is a moral standard that transcends humanity. And a transcendent moral standard requires a transcendent moral lawgiver. That is what theists mean by God.
The ontological argument — originally formulated by Anselm of Canterbury in the eleventh century and sharpened by Alvin Plantinga in the twentieth — is the most philosophically technical of the classical arguments. The basic idea: God is defined as the greatest conceivable being. A being that exists in reality is greater than a being that exists only as a concept. Therefore, if God is the greatest conceivable being, he must exist in reality — because a merely conceptual God would be surpassed by an actually existing God.
Plantinga’s modal version: if it is even possible that a maximally great being exists, then such a being exists in some possible world. And a maximally great being — by definition — exists in all possible worlds if it exists in any. Therefore, if it’s possible that God exists, God necessarily exists.
This argument is best understood as establishing that atheism faces a serious coherence problem: if God’s existence is even logically possible — which virtually everyone grants — then the modal logic pushes toward his necessary existence. The argument won’t convince everyone, but it has persuaded serious philosophers, including some who came to faith through it alone.
You are conscious. You have subjective experience — the sensation of pain, the color red, the feeling of grief, the taste of coffee. Philosophers call these “qualia.” The hard problem of consciousness is explaining why physical processes in the brain produce subjective experience at all — why there is something it is like to be you.
On a purely materialist account, the universe consists entirely of matter and energy governed by physical laws. But physical processes are, in principle, fully describable without reference to subjective experience. The motions of particles can be described without mentioning what it feels like to perceive them. Yet consciousness — the fact of inner experience — stubbornly exists and appears to be something over and above mere physical process.
If the universe began as purely physical — no mind, no consciousness, no subjectivity — it is genuinely difficult to explain how physical processes gave rise to consciousness at all. Theism offers a direct answer: mind is fundamental to reality because a Mind is behind reality. Consciousness is not an accident of matter; it is expected in a universe made by a conscious being who created conscious beings in his image.
Four Serious Objections Against God’s Existence
Now the other side — and these deserve their strongest form, not a caricature.
This is the oldest and most emotionally powerful objection to God’s existence. If God is omnipotent (all-powerful), omniscient (all-knowing), and omnibenevolent (all-good), then it seems he could prevent suffering and would want to. Yet the world contains catastrophic natural disasters, childhood cancer, genocides, and the kinds of suffering that leave men asking why in places they can’t say out loud. The sheer volume and apparent randomness of suffering seems inconsistent with a good and powerful Creator.
Philosopher David Hume put it bluntly: “Is God willing to prevent evil but not able? Then he is impotent. Is he able but not willing? Then he is malevolent. Is he both able and willing? Whence then is evil?”
If God is a personal being who desires relationship with human beings, why doesn’t he make himself more obvious? Philosopher J.L. Schellenberg argued that a perfectly loving God would ensure that any person willing to have a relationship with him could find him — and that the widespread sincere unbelief in the world is evidence that no such God exists. A father who truly wanted his children to find him would not hide from them.
World religions make mutually contradictory claims about the nature of God, the path to salvation, and the requirements of morality. Christianity says Jesus is the unique Son of God. Islam says he was a prophet but not divine. Hinduism posits thousands of deities. Buddhism is functionally non-theistic. If God exists and has revealed himself, he has done so in ways that have produced massive, irreconcilable disagreement. This either means God has not clearly revealed himself, or the revelations are all human constructions.
The history of science looks like a long retreat for religion: disease is caused by pathogens, not demons; lightning is caused by atmospheric electricity, not Zeus; species diversity is caused by natural selection, not special creation. The “God of the gaps” — invoked whenever science couldn’t explain something — keeps losing territory. Why assume the remaining gaps (origin of life, consciousness, the fine-tuning) require a God rather than simply awaiting a natural explanation?
Where Does the Weight Fall?
Neither side has a knock-down argument. Anyone who tells you the existence of God has been proved or disproved with mathematical certainty is overselling. This is a domain where the evidence is real, the arguments are serious, and reasonable people who have thought carefully about it for a long time continue to disagree.
That said, the arguments are not equally balanced in all respects. The cosmological and fine-tuning arguments have become stronger, not weaker, as modern physics has confirmed the beginning of the universe and exposed the precise calibration of its constants. The moral argument points to something that virtually everyone’s lived experience confirms — that some things are actually wrong, not just unpopular. The hard problem of consciousness remains genuinely unsolved on naturalistic terms.
The problem of evil is the strongest objection, and it deserves to be taken seriously — especially by anyone who has seen real suffering up close. It is not easily dismissed. But “I can’t see why God would permit this” is not the same as “there is no reason God could permit this,” and the gap between those two statements is where a great deal of the philosophical work happens.
The honest verdict: the evidence points toward the existence of a Creator, a moral foundation, and a conscious ground to reality. It does not settle the question of which religion, if any, correctly identifies that Creator. For that, additional investigation — into the historical evidence for the resurrection, the reliability of the biblical record, the nature of Jesus’s claims — is required.
What the Bible Says About This
Interestingly, the Bible doesn’t spend much time arguing for God’s existence. It assumes it — “In the beginning, God” (Genesis 1:1) — and proceeds from there.
But it does make a claim that is relevant to this discussion: that the evidence for God is not hidden. Romans 1:19–20 states: “What can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.”
Paul’s claim is not that everyone will see it or agree. His claim is that the creation itself testifies — that a man who looks honestly at the world has access to evidence that points beyond it. The cosmological and fine-tuning arguments are, in a sense, philosophical elaborations of what Paul is gesturing at here.
Psalm 19:1 makes the same point in fewer words: “The heavens declare the glory of God, and the sky above proclaims his handiwork.”
The Bible’s position is not that God can be proved by argument alone — faith is not the conclusion of a syllogism. But it does hold that the evidence available to every human being is sufficient to create genuine accountability. The question is not whether the evidence exists. The question is what a man does with it.
What This Means for the Man Who’s Still Deciding
A lot of men — especially men who’ve been through things — land in a particular place with this question. It’s not confident atheism. It’s not confident faith. It’s something more like: “I’ve seen enough to not be sure either way, and I’m not sure it matters.”
It matters. If God exists, then what you owe, who you are, and what happens when you die are all determined by something outside yourself. The universe is not morally neutral. Your life is not a private affair between you and the void. Your choices have weight beyond the social consequences you can see.
If God does not exist, then the suffering you’ve seen is ultimately meaningless noise in a universe that doesn’t care. The courage you’ve witnessed, the sacrifice, the loyalty — these are useful evolutionary adaptations, nothing more. Most men find that conclusion unsatisfying — not because it’s uncomfortable, but because it doesn’t actually match what they know to be true about valor, guilt, and love.
That instinct is worth following. Not because instincts are always right, but because the arguments suggest it’s pointing somewhere real.
“The most incomprehensible thing about the universe is that it is comprehensible.”
— Albert Einstein
A universe that can be understood by minds that arose inside it — that operates according to mathematical laws that the human mind can discover, verify, and apply — is exactly what you’d expect if a rational Mind made it and made us to know it. It’s not what you’d expect if the whole thing is an accident.
Start there. Keep asking. The question deserves no less.
Key Takeaways
- Both belief and unbelief require reasons. Comfortable assumptions in either direction don’t count as thinking. The question of God’s existence deserves honest engagement with the actual arguments.
- The cosmological argument: the universe began — and beginnings require causes. Whatever caused the universe must be outside it, uncaused, and immensely powerful. Modern cosmology has strengthened this argument, not weakened it.
- The fine-tuning argument: the precision of physical constants strains any coincidence explanation. Chance, necessity, or design — and the first two face serious problems. Design accounts for the data without requiring astronomical luck.
- The moral argument: objective moral facts need an objective moral foundation. If some things are truly wrong regardless of what anyone thinks, a transcendent moral standard exists. That requires a transcendent moral lawgiver.
- The problem of evil is the strongest objection — and it has serious responses. God and suffering are not logically incompatible if there are possible reasons a good God could permit suffering. The argument requires God-level knowledge to be decisive, and we don’t have that.
- The honest verdict leans toward a Creator. The cumulative weight of the cosmological, fine-tuning, moral, and consciousness arguments points toward a transcendent cause of the universe. They don’t settle which God — that requires further investigation.
- The biblical claim: the evidence is already there. Romans 1 and Psalm 19 both affirm that creation itself testifies to its Creator. The arguments philosophers have developed are elaborations of what the universe has always been saying.
The Question That Follows You
The existence of God is not a question you answer once and file away. It’s the question that sits underneath everything else — your sense of meaning, your experience of guilt and grace, your understanding of why the things you’ve seen matter.
If you’re a veteran working through this question — maybe for the first time, maybe for the hundredth — Mountain Veteran Ministries is built for that conversation. Not to hand you conclusions, but to think through it alongside you with honesty and respect for the difficulty.
The arguments are worth pursuing. The evidence is worth examining. And if at the end of that process you find yourself standing before a God who was there all along — that’s worth whatever the investigation cost.
Reach out. The door is open.
Key Scriptures: Genesis 1:1 · Psalm 19:1–4 · Romans 1:19–20 · Acts 17:24–28 · Job 38:1–7 · Romans 8:18–22 · Hebrews 11:3 · John 20:27–29





