Every LDS missionary conversation eventually arrives at the same destination. After discussing Joseph Smith, the Book of Mormon, and the restoration of the gospel, the missionaries will invite you to do one thing: read the Book of Mormon, pray sincerely, and ask God if it is true. If you do so with a sincere heart and real intent, they promise, you will receive a witness — a warm, burning feeling in your chest, a sense of peace and confirmation — that will tell you the Book of Mormon is true and that Joseph Smith was a prophet.
This is known as the Moroni Challenge, drawn from Moroni 10:3–5 in the Book of Mormon: "And when ye shall receive these things, I would exhort you that ye would ask God, the Eternal Father, in the name of Christ, if these things are not true; and if ye shall ask with a sincere heart, with real intent, having faith in Christ, he will manifest the truth of it unto you, by the power of the Holy Ghost."
It is a brilliant evangelistic strategy — emotionally compelling, deeply personal, and almost impossible to argue with directly. After all, how do you tell someone that their spiritual experience wasn't real? But the strategy has a profound flaw, and understanding that flaw is one of the most important things you can do to help a Latter-day Saint examine their faith honestly.
The Problem: Feelings Cannot Determine Historical or Doctrinal Truth
The Moroni Challenge asks you to determine whether a set of historical and doctrinal claims are true by means of a subjective emotional experience. These are two completely different categories, and using one to verify the other is a category error of serious consequence.
Consider what the LDS church is actually asking you to verify by this method: that Joseph Smith was visited by an angel named Moroni; that golden plates existed and were buried in a hillside in upstate New York; that pre-Columbian civilizations in the Americas descended from Middle Eastern peoples; that God the Father has a physical body; that Jesus and Lucifer are spirit-brothers. These are historical, archaeological, and theological claims. They are either true or false based on evidence, not on how we feel when we pray about them.
If the Moroni Challenge is a reliable method for determining truth, then it should work for the truth claims of every religion. A Muslim who sincerely prays about the Quran and receives a warm, peaceful feeling has confirmed Islam. A Hindu who prays about the Bhagavad Gita and experiences spiritual warmth has confirmed Hinduism. A Christian Scientist, a Jehovah's Witness, and a New Age practitioner can all receive sincere spiritual feelings that confirm their respective belief systems — and have, repeatedly, throughout history.
The Moroni Challenge cannot adjudicate between competing truth claims because feelings are not a reliable instrument for measuring external reality. They can be shaped by expectation, desire, familiarity, group pressure, and spiritual manipulation. The enemy of our souls is described in Scripture as one who disguises himself as an angel of light (2 Corinthians 11:14). If Satan can appear as a messenger of light, he can certainly produce feelings of warmth and peace in someone sincerely seeking spiritual confirmation of a false gospel.
When raising this issue, be careful not to dismiss or mock the spiritual experiences of the person you're speaking with. Their feelings are real, even if they are not reliable as truth-testers. The pastoral point is not "your experience was fake" — it is "even real spiritual experiences cannot tell us whether historical and doctrinal claims are objectively true." That is a different, and more respectful, argument.
What the Bible Says About the Human Heart
Scripture does not treat human spiritual experience — even sincere, earnest spiritual experience — as a reliable guide to truth. In fact, Scripture is specifically cautionary about trusting our own hearts and spiritual impressions:
These are not fringe passages. They are direct, forceful statements about the unreliability of human intuition and spiritual feeling as guides to ultimate truth. The very faculty LDS epistemology asks you to rely upon — sincere inner feeling — is the faculty the Bible most explicitly warns us about trusting on its own.
This does not mean feelings are worthless. The Holy Spirit does work through our emotions, and genuine spiritual conviction is part of saving faith. But the biblical model is always feeling tethered to and tested by the word of God — not feeling as an independent source of revelation. The Bereans in Acts 17:11 are praised precisely because, when Paul preached to them, they did not simply receive his message based on how it made them feel. They "examined the Scriptures daily to see if these things were so."
The Circular Structure of the Moroni Challenge
There is a second problem with the Moroni Challenge that is worth raising directly: it is structured to make doubt feel like a spiritual failure. Moroni 10:4 conditions the promised witness on sincerity, "real intent," and faith in Christ. When a person prays and does not receive a burning confirmation — as many do not — the LDS interpretation is not that the Book of Mormon might be false. It is that the person did not pray sincerely enough, or with real intent, or with sufficient faith.
This makes the challenge unfalsifiable. Any negative result can be attributed to the seeker's spiritual deficiency. Any positive result confirms the church. The test can only produce one outcome. That is not an honest epistemological test — it is a system designed to protect itself from scrutiny.
A powerful and disarming response to the Moroni Challenge: "I appreciate that. Here's a challenge I'd offer in return: Would you be willing to pray and ask God — with a completely open heart, no predetermined answer — to show you whether the historical problems with the Book of Mormon, the First Vision contradictions, and the Book of Abraham problems are real? Just ask Him to lead you to the truth, even if it's uncomfortable. I'll do the same. Can we both commit to following the truth wherever it leads?" This reframes the challenge around honest inquiry rather than confirmation of a predetermined conclusion.
How Biblical Faith Differs
It is important not to leave a Latter-day Saint with the impression that Christianity has no place for spiritual experience or that it relies purely on cold intellectual argument. Biblical faith is not merely intellectual assent. The Holy Spirit genuinely works in the hearts and minds of believers, producing conviction, joy, and assurance. But biblical faith is always rooted in and accountable to the objective, external word of God — and the truth claims of Christianity are testable and have been extensively tested.
The resurrection of Jesus Christ is a historical event — not a feeling. It is claimed to have happened in a specific place, at a specific time, witnessed by specific people. The New Testament writers staked everything on its historical verifiability: "If Christ has not been raised, your faith is futile and you are still in your sins" (1 Corinthians 15:17). Paul does not say "if you don't feel the resurrection is true." He says "if it did not actually happen, we are of all people most to be pitied." That is a truth claim that invites investigation, not just spiritual experience.
The lamp is the word — objective, external, illuminating the path regardless of how we feel in the moment. Feelings follow truth; they do not generate it.