What about Mormonism?
Question 60020
Mormonism presents itself as a restoration of original Christianity, complete with temples, priesthoods, and a living prophet. To millions of people it looks, sounds, and feels Christian. Missionaries in white shirts carry copies of the Bible alongside the Book of Mormon, speak warmly about Jesus, and use familiar evangelical vocabulary. The question every believer needs to ask is whether the theology behind that vocabulary is the theology of Scripture, or something fundamentally different wearing biblical clothing.
Origins and Authority Claims
The Church of Jesus Christ of Latter-day Saints was founded by Joseph Smith in 1830, following his claimed vision of the Father and the Son in 1820 and his alleged reception of golden plates from the angel Moroni, which he translated as the Book of Mormon. Smith went on to produce additional scriptures: the Doctrine and Covenants and the Pearl of Great Price. The church claims an ongoing prophetic office, meaning that the pronouncements of its living president carry revelatory authority alongside its written texts. This is a direct challenge to the sufficiency and finality of the biblical canon. Scripture is clear that the faith was “once for all delivered to the saints” (Jude 3), and the canon is closed. Any system that supplements the sixty-six books of the Bible with additional authoritative scripture has, at the foundational level, departed from biblical Christianity.
The Doctrine of God
Mormon theology teaches that God the Father was once a human being who progressed to godhood, and that human beings can likewise progress to become gods. The fifth president of the LDS church, Lorenzo Snow, summarised the doctrine: “As man now is, God once was; as God now is, man may be.” This is polytheism dressed in Christian language. The God of Scripture is eternal, self-existent, uncreated, and without beginning or end. He did not become God; He has always been God. “Before me no god was formed, nor shall there be any after me” (Isaiah 43:10). The distance between the Mormon concept of a progressed human deity and the God who declares “I am God, and there is no other” (Isaiah 46:9) is not a matter of nuance. It is a different religion.
The Mormon understanding of the Trinity is equally problematic. LDS theology teaches that the Father, Son, and Holy Spirit are three separate gods united in purpose, not one God in three persons. The Father and Son have physical, glorified bodies of flesh and bone, while the Holy Spirit is a personage of spirit. This is tritheism, not Trinitarianism. Historic Christian orthodoxy, grounded in Scripture, confesses one God eternally existing in three persons who share one divine essence. The Shema of Deuteronomy 6:4 — “Hear, O Israel: The LORD our God, the LORD is one” — is not negotiable, and no amount of Mormon reinterpretation can bring three separate deities into alignment with it.
Christology and Salvation
Mormon Christology teaches that Jesus is the literal spirit-child of Heavenly Father and a heavenly mother, and that He is the spirit-brother of Lucifer. This is a catastrophic departure from Scripture. Jesus is the eternal Son of God, not a created being. “In the beginning was the Word, and the Word was with God, and the Word was God” (John 1:1). He is before all things and in Him all things hold together (Colossians 1:17). A Jesus who is a created spirit-child is not the Jesus of the Bible, and a different Jesus means a different gospel (2 Corinthians 11:4).
Mormon soteriology divides salvation into “general salvation” (resurrection for all, achieved by Christ’s atonement) and “individual exaltation” (godhood in the celestial kingdom, achieved through faith, repentance, baptism, temple ordinances, celestial marriage, and ongoing obedience). This is salvation by works dressed in grace language. Paul’s words to the Ephesians could not be more direct: “For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast” (Ephesians 2:8-9). The entire apparatus of temple ceremonies, secret handshakes, special undergarments, and posthumous baptisms for the dead has no biblical warrant and functions as a works-based system of merit that contradicts the sufficiency of the cross.
The Book of Mormon and Historical Evidence
The Book of Mormon claims to record the history of two ancient civilisations in the Americas descended from groups that migrated from the Near East. Despite decades of archaeological work, no credible evidence has ever been found to support these claims. No cities, no inscriptions, no artefacts, no DNA evidence linking Native American populations to ancient Israel. Compare this with the Bible, where archaeological discoveries continue to confirm the historical reliability of the biblical narrative. The absence of evidence is not, in itself, conclusive proof of falsehood, but when a text makes extensive historical and geographical claims and not a single one has been independently verified, the credibility of the text is legitimately questioned.
There are also significant textual problems. Portions of the Book of Mormon closely parallel the King James Version of the Bible, including passages from Isaiah and the Sermon on the Mount, raising the question of how a text allegedly written centuries before the KJV could reproduce its distinctive English rendering. The Book of Mormon has undergone thousands of changes since its original publication, despite being presented as a divinely revealed translation.
So, now what?
The kindest and most honest thing a Christian can say about Mormonism is that it is not Christianity. The people within it are often sincere, moral, family-oriented, and genuinely devoted to what they believe. Sincerity, however, is not the test of truth. The god of Mormonism is not the God of the Bible. The Jesus of Mormonism is not the Jesus of the Bible. The gospel of Mormonism is not the gospel Paul preached. When engaging with Mormon friends, neighbours, or missionaries, the approach should be gracious and respectful, but theologically clear. The conversation should centre on who God is (eternal, uncreated, one), who Jesus is (fully God, not a created spirit-child), and how salvation works (by grace alone through faith alone in Christ alone). These are not secondary disagreements between Christian traditions. They are the differences between the biblical gospel and a counterfeit that uses the same words to mean entirely different things.
“But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed.” Galatians 1:8
