Common Logical Fallacies in Religious Discussions
How to recognize them, how to avoid them, and how to expose them when critics misuse them against Latter-day Saints.
Engaging in religious discussions requires both thoughtful reasoning and intellectual honesty. Logical fallacies can undermine any argument — but it is equally common for opponents to weaponize fallacy accusations incorrectly. Below are the most common fallacies you will encounter, with concrete examples of how critics deploy them against Latter-day Saint truth claims, and a clear explanation of when a fallacy accusation is itself mistaken.
1. Straw Man Fallacy
Definition: Misrepresenting an opponent’s argument to make it easier to attack.
General Example: “You don’t believe in miracles? So you think everything in the universe just happened by chance.”
Anti-LDS Example in the Wild
“Mormons believe they will become gods of their own planets and rule over spirit children forever.”
This is a straw man of LDS exaltation doctrine. The actual teaching is that the faithful may share in God’s divine nature and participate in His eternal work — a carefully qualified theological position rooted in Doctrine & Covenants 132 and the King Follett discourse. The “planet” language is an embellishment designed to make the doctrine sound absurd, not a fair representation of what the Church teaches. When a critic can only win by distorting your position, that tells you something about the strength of the actual argument.
How to Avoid: Take time to fully understand your opponent’s position. Restate their argument in your own words and confirm its accuracy before refuting it. Address their actual points rather than an exaggerated version.
When It’s Misapplied: Pointing out the logical consequences of someone’s beliefs is not a straw man if those consequences naturally follow from their stated argument. If someone argues that morality can exist with no objective grounding, exploring where that logic leads is fair — even if uncomfortable.
2. Ad Hominem Fallacy
Definition: Attacking the person making the argument instead of addressing the argument itself.
General Example: “You can’t trust what they say about faith — they’re an atheist.”
Anti-LDS Example in the Wild
“Joseph Smith was a convicted con man — therefore the Book of Mormon is false.”
This is a textbook ad hominem. Even if every negative claim about Joseph Smith were true, it would not by itself determine the truth or falsity of the Book of Mormon. The book must be evaluated on its own merits: its internal consistency, its ancient textual features, its historical and geographical claims, and its spiritual claims. Critics who open with character attacks are signaling that they prefer to bypass the actual evidence. The proper response is to say: “That’s about the man — let’s talk about the book.”
How to Avoid: Focus on the argument, not the individual presenting it. Use respectful language and acknowledge the sincerity of others’ positions.
When It’s Misapplied: Critiquing a person’s qualifications, biases, or motives is legitimate when those factors directly affect the argument — for example, when a critic claims scholarly expertise they do not possess. This is addressing the credibility of the argument’s foundation, not committing an ad hominem.
3. Appeal to Authority
Definition: Asserting a claim is true solely because an authority figure endorses it, without providing further evidence or reasoning.
General Example: “This must be true because my pastor said so.”
Anti-LDS Example in the Wild
“Scholar X has concluded that the Book of Mormon is 19th-century American fiction — the question is settled.”
Naming a critic with academic credentials does not end the discussion. Scholarship on the Book of Mormon is actively contested, and there are credentialed scholars — including non-LDS researchers — who have documented genuine ancient features in the text, such as chiasmus, Hebraisms, and Near Eastern literary forms. One scholar’s opinion, even a prominent one, is not a consensus. Treat it as a data point requiring examination, not a verdict.
How to Avoid: Use reasoning and context to support references to authority. Show how the authority’s position aligns with evidence, not just their prestige.
When It’s Misapplied: Referencing an authority is not fallacious when the authority is genuinely qualified in the relevant field and their reasoning is supported by evidence. Citing a respected scholar’s well-argued interpretation — with context — is legitimate if their argument is sound.
4. False Dichotomy (Either-Or Fallacy)
Definition: Presenting only two options when more actually exist.
General Example: “Either you believe in God, or you have no morals.”
Anti-LDS Example in the Wild
“Either the Church is 100% true in every particular, or it’s a complete fraud and Joseph Smith was a deliberate deceiver.”
This framing eliminates the entire middle ground. It ignores at minimum the possibility of an inspired-but-imperfect institution operating through fallible human instruments — precisely the model the scriptures themselves describe (see D&C 1:24–28). It also ignores the possibility of sincere prophetic experience that was imperfectly recorded or contextually limited. Demanding a binary verdict is a rhetorical trap, not a logical argument.
How to Avoid: Recognize the complexity of issues and explore multiple perspectives. Avoid framing arguments as “all or nothing” unless the situation is genuinely exhaustive.
When It’s Misapplied: Presenting two options is not a false dichotomy when no other logical options genuinely exist. “Either God exists or He does not” is a legitimate binary — those are logically exhaustive possibilities.
5. Circular Reasoning (Begging the Question)
Definition: Assuming in your premises exactly what you are trying to prove.
General Example: “The Bible is true because it says so in the Bible.”
Anti-LDS Example in the Wild
“The Bible is the only authoritative scripture because the Bible says so — therefore the Book of Mormon cannot be genuine scripture.”
This is circular on two levels. First, it uses the Bible to validate the Bible as the sole authority. Second, it assumes the conclusion — that no other scripture can exist — as the premise needed to dismiss the Book of Mormon. In reality, the biblical canon was determined by early church councils, not by internal biblical command. The argument does not refute the Book of Mormon; it merely presupposes what it needs to prove.
How to Avoid: Use external evidence or independent logical reasoning to support claims. Be transparent about which premises are faith-based assumptions and which are independently established.
When It’s Misapplied: Accusations of circular reasoning are misplaced when an argument uses internal consistency alongside external corroboration. Arguing that scripture supports a belief is valid when backed by historical, archaeological, or doctrinal evidence from outside the text.
6. Appeal to Emotion
Definition: Using emotional manipulation rather than logic to persuade, treating emotional intensity as evidence.
General Example: “How could you not believe in a God who loves you so much?”
Anti-LDS Example in the Wild
“Think of the families torn apart by polygamy — how can you possibly defend this church?”
The suffering of real people is not in dispute — but suffering does not constitute a logical argument against the truth claims of the Restoration. Many things that are true are also painful. This rhetorical move substitutes moral indignation for historical and theological analysis. The honest questions — why polygamy was introduced, what the scriptural basis was, how it was practiced, and why it ended — deserve careful engagement, not emotional short-circuiting.
How to Avoid: Pair emotional appeals with doctrinal or logical support. Focus on truth rather than relying solely on feelings or sympathy.
When It’s Misapplied: Emotion can be a legitimate part of persuasion when it supports rather than replaces reason. Sharing a personal experience to illustrate a larger point is valid — the fallacy arises only when emotional intensity is treated as proof.
7. Slippery Slope
Definition: Arguing that a small or reasonable step will inevitably lead to extreme and undesirable consequences, without demonstrating the causal chain.
General Example: “If we question this verse, we’ll end up questioning the entire religion!”
Anti-LDS Example in the Wild
“If you accept LDS priesthood authority, you’ll end up believing anything any leader says without thinking for yourself.”
No causal mechanism is provided for why recognizing priesthood authority leads to intellectual passivity. The LDS scriptural canon explicitly warns members to seek personal confirmation of all things taught (see D&C 9:7–9) and states plainly that “no power or influence can or ought to be maintained by virtue of the priesthood, only by persuasion” (D&C 121:41). The slippery slope dissolves when you actually read the theology.
How to Avoid: Present evidence or reasoning for claims about consequences. Establish the causal steps rather than asserting inevitability.
When It’s Misapplied: Pointing out a logical progression is not a slippery slope fallacy when the progression is supported by evidence or well-documented historical patterns. If each step can be justified, the argument is a legitimate chain of consequences, not a fallacy.
8. Hasty Generalization
Definition: Drawing a broad conclusion from an insufficient or unrepresentative sample of evidence.
General Example: “All atheists are arrogant because my one atheist friend is.”
Anti-LDS Example in the Wild
“I knew a Mormon who was dishonest with me — you simply cannot trust Latter-day Saints.”
One person’s behavior cannot characterize 17 million members of a global faith. This move is not a theological argument — it is a prejudice dressed up as an observation. By this same logic, every Christian tradition, political party, and nationality could be condemned wholesale based on individual examples. Challenge the reasoning directly: a sample of one proves nothing about a population.
How to Avoid: Base arguments on established doctrines or well-supported evidence drawn from adequate samples. Avoid sweeping generalizations about individuals or groups.
When It’s Misapplied: General statements are not hasty generalizations if they accurately reflect patterns supported by sufficient evidence. Noting trends documented by credible research across large populations is a legitimate inductive argument.
9. No True Scotsman
Definition: Dismissing counterexamples by arbitrarily redefining the criteria for group membership — moving the goalposts to protect a generalization.
General Example: “No true Christian would ever doubt the existence of God.”
Anti-LDS Example in the Wild
“No real scholar takes the Book of Mormon seriously — so any researcher who defends it must not be a legitimate academic.”
This is the fallacy in its purest form: the definition of “real scholar” is silently revised to exclude anyone whose conclusions the critic dislikes. Scholars at major research universities have published peer-reviewed work on ancient features of the Book of Mormon. Dismissing them by reclassifying them as non-scholars is not an argument — it is a refusal to engage with evidence.
How to Avoid: Clearly define terms before using them in arguments. Respect others’ sincerity while explaining doctrinal perspectives.
When It’s Misapplied: It is not a fallacy to note that someone’s stated beliefs conflict with a well-defined standard. Explaining that rejecting the divinity of Christ contradicts historic Christian orthodoxy is a legitimate definitional claim — not a goalpost shift — provided the standard is pre-established and consistently applied.
10. Appeal to Tradition
Definition: Arguing that something is correct simply because it has been believed or practiced for a long time.
General Example: “We’ve always believed this, so it must be true.”
Anti-LDS Example in the Wild
“Christianity has been Trinitarian for 1,700 years — if the LDS concept of the Godhead were correct, someone would have taught it before Joseph Smith.”
The argument assumes that duration of belief is evidence of its truth — the classic appeal to tradition. But the LDS claim is precisely that there was an apostasy that corrupted early Christian theology, and that the Nicene formulation was itself a departure from what the apostles taught. Whether that claim is correct must be evaluated on historical and scriptural grounds, not by asserting that “1,700 years can’t be wrong.” Long-held consensus has been overturned in every field of human inquiry.
How to Avoid: Demonstrate how tradition aligns with scripture or independent evidence. Distinguish between core doctrines that are independently supported and practices that are merely customary.
When It’s Misapplied: Citing tradition is not fallacious when it reflects consistent doctrinal or scriptural teaching supported by evidence beyond mere longevity. Centuries of theological consensus can be one data point in a larger argument — just not the only one.
Putting It Together
Recognizing these fallacies in the wild is a practical skill. Anti-LDS argumentation disproportionately relies on ad hominem attacks, straw man misrepresentations, false dichotomies, and emotional manipulation because these moves can feel compelling while bypassing the actual evidence. The moment you can name the error — calmly, precisely, and without heat — the rhetorical force of the attack collapses.
This is not about scoring debate points. It is about protecting honest inquiry. When bad arguments are allowed to pass unchallenged, the real questions never get asked. The goal of a Latter-day Saint apologist is not to win — it is to ensure that the truth claims of the Restoration receive a fair hearing, evaluated on their actual merits.
Know the fallacies. Name them when you see them. Then return to the evidence.