by Erik Manning
There’s a dizzying array of arguments for the existence of God. For a newbie looking to get into apologetics, it can be intimidating trying to figure out where to start. You have the cosmological argument, but it helps if you know something about cosmology, physics and even math. There’s the argument from the origin of life, but now you’re talking about chemistry, DNA, information theory and it can feel overwhelming. There’s the ontological argument, but that requires understanding modal logic and let’s be real here, has anyone in the history of the universe come to faith because of the ontological argument? Sorry, St. Anselm.
If you’re looking either for ammo to argue against naturalistic atheism or to give some reasons for someone to think God exists, I wholeheartedly recommend learning the moral argument. Why?
For one thing, it’s accessible. You don’t need a Ph.D. in philosophy, physics or chemistry to understand the argument. Secondly, it’s more effective because it touches people at a personal level that scientific arguments do not.
Dr. William Lane Craig got his doctorate in philosophy and spent decades developing a version of the cosmological argument. But after spending years of lecturing and debating some of the smartest atheists on the planet, here’s what he has to say about the moral argument:
In my experience, the moral argument is the most effective of all the arguments for the existence of God. I say this grudgingly because my favorite is the cosmological argument. But the cosmological and teleological (design) arguments don’t touch people where they live. The moral argument cannot be so easily brushed aside. For every day you get up you answer the question of whether there are objective moral values and duties by how you live. It’s unavoidable.”
-On Guard, Chapter 6
With a little thought, you know this is true. Just log on to Twitter or turn on cable news for a few seconds. We live in a culture where people are in a state of constant moral outrage. CS Lewis popularized the argument in his classic work Mere Christianity. (Warning: Massive understatement alert!) In regards to the power of the moral argument, Lewis says:
“We have two bits of evidence about the Somebody. One is the universe He has made. If we used that as our only clue, then I think we should have to conclude that He was a great artist (for the universe is a very beautiful place), but also that He is quite merciless and no friend to man (for the universe is a very dangerous and terrifying place). The other bit of evidence is that Moral Law which He has put into our minds.
And this is a better bit of evidence than the other because it is inside information. You find out more about God from the Moral Law than from the universe in general just as you find out more about a man by listening to his conversation than by looking at a house he has built. Now, from this second bit of evidence, we conclude that the Being behind the universe is intensely interested in right conduct—in fair play, unselfishness, courage, good faith, honesty, and truthfulness.“
So what is the moral argument? There are several ways to put it into the form of an argument. I favor using negatively in order to falsify atheism. If atheism isn’t true then obviously we should reject it and find a worldview that makes better sense of reality. Here’s the argument in logical form:
- If naturalistic atheism is true, there no moral facts.
- There are moral facts.
- Therefore, naturalistic atheism is false.
An example of a moral fact would be that even if NAMBLA (North American Man/Boy Love Association…ew.) somehow hypnotized the world into thinking that pedophilia is morally acceptable, it would still be morally wrong. Morality isn’t a matter of personal preference. I’m going to bring some ‘hostile witnesses’ on the scene to help make my case.
CAN MORAL FACTS BE FACTS OF NATURE?

Some atheists have tried to say so, but I think unsuccessfully. Moral facts aren’t about the way things are, but the way things ought to or should be. But if the world isn’t here for a purpose, then there is no way things are intended to be. Natural facts are facts about the way things are, not the way things ought to be. Animals kill and forcibly mate with other animals, but we don’t call those things murder or rape. But if natural facts are the only types of facts on the table, then the same holds true of people. We can explain the pain and suffering on a scientific level, but we can’t explain why one ought not to inflict suffering and pain.
Here are three atheists who drive the point home that on atheism there can be no moral facts.

“The position of the modern evolutionist…is that humans have an awareness of morality…because such an awareness is of biological worth. Morality is a biological adaptation no less than our hands and feet and teeth…Considered as a rationally justifiable set of claims about an objective something, ethics is illusory. I appreciate that when somebody says “Love thy neighbor as thyself,” they think they are referring above and beyond themselves…Nevertheless, such reference is truly without foundation. Morality is just an aid to survival and reproduction…and any deeper meaning is illusory.” – Atheist philosopher Michael Ruse.
“In a universe of blind physical forces and genetic replication, some people are going to get hurt, other people are going to get lucky, and you won’t find any rhyme or reason in it or any justice. The universe that we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference. DNA neither knows nor cares. DNA just is.“ – Atheist biologist Richard Dawkins
And finally, here’s atheist philosopher Alex Rosenberg, when asked about the cruel and inhumane cultural practice of foot-binding that was practiced by the Chinese for centuries:
Interviewer: “And so your argument is to say we shouldn’t do foot-binding anymore because it’s not adaptive, or should we…?”
Rosenberg: “No. I don’t think that it is in a position to tell you what we ought and ought not to do: it is in a position to tell you why we’ve done it and what the consequences of continuing or failing to do it are, okay? But it can’t adjudicate ultimate questions of value, because those are expressions of people’s emotions and, dare I say, tastes.”
Earlier in the interview, Rosenberg says “Is there a difference between right and wrong, good and bad? There’s not a moral difference between them.”
BUT THERE ARE MORAL FACTS
So rather than giving up naturalism, these atheists bite the bullet and say that on their worldview there is no room for moral facts. But how plausible is that really? As you can imagine, many atheists disagree. Here are some more ‘hostile witnesses’ I’ll bring in to make the point:
“Whatever skeptical arguments may be brought against our belief that killing the innocent is morally wrong, we are more certain that the killing is morally wrong than that the argument is sound…Torturing an innocent child for the sheer fun of it is morally wrong. Full stop.” -Atheist philosopher Paul Cave.
“Some moral views are better than others, despite the sincerity of the individuals, cultures, and societies that endorse them. Some moral views are true, others false, and my thinking them so doesn’t make them so. My society’s endorsement of them doesn’t prove their truth. Individuals and whole societies can be seriously mistaken when it comes to morality. The best explanation of this is that there are moral standards not of our own making.” – Atheist philosopher Russ Shafer-Landau
“Any argument for moral skepticism will be based upon premises which are less obvious than the existence of objective moral values themselves.” – Atheist philosopher Louise Antony
This makes sense. Any argument that allows for the possibility that there is no more moral virtue in adopting a child or torturing a child for fun is a lot less plausible than the existence of moral values and duties. Why should we doubt our moral sense any more than our physical senses?
The problem is for the naturalist is that from valueless, meaningless processes valueless, meaninglessness comes. Atheism just doesn’t seem to have the resources for the existence of moral facts. Christian philosopher Paul Copan writes:
Intrinsically-valuable, thinking persons do not come from impersonal, non-conscious, unguided, valueless processes over time. A personal, self-aware, purposeful, good God provides the natural and necessary context for the existence of valuable, rights-bearing, morally-responsible human persons.
And atheist philosopher JL Mackie agrees that if there are moral facts, their existence fits much better on theism than on atheism. He wrote “Moral properties constitute so odd a cluster of properties and relations that they are most unlikely to have arisen in the ordinary course of events without an all-powerful god to create them. If there are objective values, they make the existence of a god more probable than it would have been without them. Thus, we have a defensible argument from morality to the existence of a god.”
THE POWER OF THE MORAL ARGUMENT: HOW 3 FORMER ATHEISTS CHANGED THEIR MINDS
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