Apologetics · FaithLogic
Where Do Right and Wrong Come From?
Almost everyone agrees that some acts — torturing a child for entertainment — are really wrong, not just unpopular. The question here is not whether atheists can be good (plainly they can) but what makes moral facts true.
The argument
One common form
1. If there is no God, there are no objective moral values and duties. 2. There are objective moral values and duties. 3. Therefore, God exists. It is valid; the work is in defending the two premises, and each can be resisted.
Premise 2 — morality is real
The cost of denying it
Most people, and most philosophers, are moral realists — the 2020 PhilPapers survey found around 60% accept or lean toward realism. We treat “the Holocaust was wrong” as something discovered, not invented. The alternative — that it was wrong only in the way anchovies are unpleasant, a matter of taste or majority vote — is a very hard bullet to bite, and few bite it consistently.
Premise 1 — where an obligation could come from
Feelings vs authority
Evolution and culture can explain why we feel that cruelty is wrong. They do not obviously explain why that feeling is binding — why it has authority over someone who feels differently. The atheist philosopher J. L. Mackie argued that objective moral facts would be metaphysically “queer,” unlike anything else in a naturalist world. Sharon Street’s “Darwinian dilemma” (2006) presses the other way: if our moral sense was shaped by selection for survival rather than for tracking truth, naturalism gives us reason to distrust it as a guide to mind-independent moral reality.
The Euthyphro dilemma
“Is it good because God commands it, or commanded because it is good?”
The standard answer takes neither horn. On Robert Adams’s account (Finite and Infinite Goods, 1999), goodness is grounded in God’s own necessary character — God is love, justice, faithfulness — and commands express that nature. So morality is not an arbitrary divine whim, and it is not a standard standing over God to which God must answer. It is neither above God nor invented by God; it is rooted in what God unchangeably is.
“You don’t need God to be good”
True — and beside the point
Conceded, and it matters. The moral argument is about ontology (what makes acts right or wrong), not epistemology (knowing right from wrong) or motivation (doing the right thing). Atheists know and do good because moral truth is real and human beings perceive it — on the theist’s account, because they are made in the image of a good God. The claim was never that unbelievers are wicked.
The honest limit
A serious secular reply
This is an inference to the best explanation, not a proof. Some atheist philosophers — Erik Wielenberg (Robust Ethics, 2014), Derek Parfit — hold that moral facts are simply brute necessary truths, real but not grounded in anything, including God. That is a live and respectable position. The theist’s reply is that it multiplies unexplained necessities: it is more economical if the same necessary personal being who explains why anything exists at all also grounds why some things are truly good.
💡 The Moral Argument — Reasonable Summary“The argument is not that atheists are immoral — it is that objective moral facts need grounding. Most people and most philosophers take morality to be real and discovered, not invented; denying that is a hard bullet. On naturalism it is unclear why an evolved moral feeling would be authoritative, and evolutionary debunking arguments cut against moral realism. The Euthyphro dilemma is answered by grounding goodness in God’s necessary character rather than in arbitrary commands or an external standard. Knowing and doing good without believing in God is fully expected on the theist’s own account. Secular moral realism is a real alternative; the theist argues it leaves more unexplained.”
Related Sections
• Does God Exist? — The Case for a Creator — the cumulative case this argument belongs to.
• The Problem of Evil — Answered Honestly — the objection that assumes a real standard of good.
• Can Matter Think? — the parallel strain on naturalism from the mind.
• Is the Cross “Cosmic Child Abuse”? — divine justice and the atonement.
• The Problem of Evil — Answered Honestly — the objection that assumes a real standard of good.
• Can Matter Think? — the parallel strain on naturalism from the mind.
• Is the Cross “Cosmic Child Abuse”? — divine justice and the atonement.
This is part of the FaithLogic study library — the biblical, historical and manuscript case that Jesus is God, with every claim linked to its source. Open the interactive version for search, cross-references, read-aloud, and the full library.