Two young men knock on your door. They are clean-cut, polite, and well-dressed. They introduce themselves as "Elder" something-or-other, say they represent The Church of Jesus Christ of Latter-day Saints, and ask if they can share a message about Jesus Christ. They seem sincere. They use familiar words — God, Jesus, gospel, salvation. And before the conversation is over, you realize that despite the shared vocabulary, something is profoundly different about what they mean by each of those words.

That moment of dissonance — familiar words, unfamiliar meanings — is the central challenge of engaging Mormonism. It is not a fringe cult operating in the shadows. It is a 17-million-member, multi-billion-dollar religious institution headquartered in Salt Lake City, with significant cultural influence across the American West, in professional sports, business, and politics. Latter-day Saints are often your neighbors, coworkers, and friends. They are, by most measures, some of the most morally upright and family-oriented people you will ever meet.

And yet the god they worship, the Jesus they follow, and the gospel they believe are not the God, Jesus, or gospel of the Bible.

This series is written for evangelical Christians who want to engage Latter-day Saints thoughtfully — not with mockery or contempt, but with the kind of honest, loving, biblically-grounded conversation that might, by God's grace, open a door. This first article lays the foundation: who the Latter-day Saints are, where they came from, and the shape of what they believe. Subsequent articles will dig into each major doctrinal difference in depth.

A Brief History: Joseph Smith and the Founding of Mormonism

To understand Mormonism, you must understand its founder. Joseph Smith Jr. was born in 1805 in Vermont and raised in upstate New York during a period of intense religious ferment known as the Second Great Awakening. The region saw competing revivals, new denominations, and widespread spiritual excitement — so much so that historians have called it the "burned-over district" for how thoroughly it had been swept by religious fire.

According to Smith's later accounts, around 1820 — at age fourteen — he went into a grove of trees near his home to pray about which church to join. He claimed that God the Father and Jesus Christ appeared to him as two separate, embodied beings and told him that all existing churches were corrupt and that their creeds were an abomination. This event, known in LDS tradition as the First Vision, is the foundational truth claim of the entire Mormon religion. If it happened as described, Mormonism has a case. If it did not — or if it happened differently — the entire edifice collapses.

In 1823, Smith claimed an angel named Moroni appeared to him and directed him to golden plates buried in a hillside near his home. Over the following years, he said he translated these plates — using a seer stone placed in a hat, into which he would bury his face — producing what became The Book of Mormon, published in 1830. That same year, Smith formally organized the Church of Christ (later renamed the Church of Jesus Christ of Latter-day Saints), claiming it was the restoration of the one true church that had been lost from the earth since the death of the original apostles.

Smith continued to receive "revelations" throughout his life, including the doctrines of plural marriage (polygamy), baptism for the dead, and the exaltation of humans to godhood — doctrines that would define Mormonism and distance it further from historical Christianity. He was killed by a mob in 1844 in Carthage, Illinois, while awaiting trial on charges including treason. After his death, the main body of followers was led westward by Brigham Young to Utah, where the church established its permanent home.

The LDS Scriptures: Four "Standard Works"

One of the most immediate differences between Mormonism and evangelical Christianity is the question of scripture. Latter-day Saints accept four books as scripture — their "Standard Works":

1. The Bible — accepted "as far as it is translated correctly," which functionally gives LDS leaders the authority to dismiss any biblical passage that contradicts their theology as a translation error.

2. The Book of Mormon — claimed to be a history of ancient peoples who migrated from the Middle East to the Americas, and among whom a resurrected Jesus allegedly appeared after his ascension. Modern archaeology, DNA studies, and linguistic analysis have found no supporting evidence for the civilizations it describes.

3. Doctrine and Covenants (D&C) — a collection of revelations claimed to have been given to Joseph Smith and subsequent LDS presidents. This is where the most theologically distinctive LDS doctrines appear — including plural marriage and the eternal progression of God.

4. The Pearl of Great Price — a collection of shorter writings by Smith, including his history and the Book of Abraham, which Smith claimed to have translated from Egyptian papyri. When actual Egyptologists examined those papyri in the 1960s, they found Smith's "translation" bore no resemblance to what the texts actually said. We will address this in Article 7.

Additionally, the LDS church maintains that its current president is a living prophet whose declarations carry scriptural authority. This open canon of ongoing revelation means that LDS doctrine has shifted significantly over time — which itself raises serious questions about the reliability of a God who, according to Malachi 3:6, does not change.

A Snapshot of Core LDS Beliefs

The table below gives a high-level overview of where LDS theology diverges from the biblical Christian faith. Each of these will be addressed in its own dedicated article in this series.

Why This Is Not Just "Another Christian Denomination"

The LDS church works hard to present itself as simply another branch of Christianity — and it has been remarkably successful in doing so in the popular imagination. But the differences are not minor variations in worship style or church governance. They are fundamental disagreements about the nature of God, the identity of Jesus, the basis of salvation, and the authority of Scripture. These are not secondary issues. They are the gospel itself.

The apostle Paul's warning in Galatians 1:8–9 is perhaps the most directly applicable passage in the New Testament to the Mormon situation:

This is striking because Mormonism claims its gospel was delivered by an angel — literally. Paul, writing under the inspiration of the Holy Spirit, anticipates exactly this scenario and pronounces a curse on it. This is not triumphalism on our part — it is soberness. The stakes are eternal, for the Latter-day Saints who believe this system and for us who are called to bear witness to the true gospel.

How to Engage a Latter-day Saint: Starting Posture

Before diving into the theological details in subsequent articles, it is worth establishing the right posture for these conversations. Latter-day Saints are not your enemies — they are your mission field. Most of them are:

Sincere. The vast majority of Latter-day Saints genuinely believe what they have been taught. Many are deeply devoted, sacrificial, and spiritually hungry. Condescension will shut every door.

Culturally embedded. For most Latter-day Saints, their faith is inseparable from their family, community, identity, and social world. Leaving the LDS church often means losing everything. This is not an excuse, but it is important context for understanding why intellectual arguments alone rarely produce conversion.

Trained to respond to objections. LDS missionaries receive specific training on how to deflect standard evangelical objections. Going in with a rehearsed argument often triggers a rehearsed response. Better to ask good questions than to deliver a lecture.

Often not aware of their own history. Many active Latter-day Saints have never encountered the First Vision contradictions, the Book of Abraham problems, or Joseph Smith's failed prophecies. The church has historically controlled the narrative tightly. Gentle, honest questions about documented history can open minds in ways that doctrinal arguments cannot.

The Mormon Jesus vs. the Biblical Jesus

We will devote an entire article to LDS Christology, but it deserves brief mention here because it is the most critical issue of all. The LDS Jesus is not the Jesus of the New Testament. He is a created being — the literal spirit offspring of Heavenly Father and a Heavenly Mother. He is the spirit-brother of Lucifer. He is one of three separate gods. His atoning work began in the Garden of Gethsemane, not on the cross. And he achieved his divinity in the same way faithful Mormons hope to achieve theirs — through eternal progression.

This matters because salvation is bound up in the person of Jesus Christ. If the Jesus you are trusting is not the eternal Son of God who took on flesh, bore the wrath of God for sin, died, and rose bodily from the dead — then your faith, however sincere, is not saving faith. It is faith in a different Jesus. And Paul addresses exactly this in 2 Corinthians 11:4.

What This Series Will Cover

Over the next seven articles, we will examine each major area of LDS theology in depth, always comparing it to the clear teaching of Scripture. Here is the road map:

Article 2 — God the Father: Eternal Progression and the nature of God. Is the God of Mormonism the God of the Bible?

Article 3 — Jesus Christ in Mormonism: Spirit-brother of Satan, a separate god, and a non-eternal Savior.

Article 4 — Scripture and Revelation: The four Standard Works, the open canon, and the archaeological problems with the Book of Mormon.

Article 5 — Salvation vs. Exaltation: Grace, works, temple ordinances, and what Mormonism actually teaches about how to be saved.

Article 6 — The Burning Bosom: LDS epistemology, the Moroni challenge, and why feelings cannot be the arbiter of truth.

Article 7 — Joseph Smith as Prophet: The First Vision contradictions, failed prophecies, and the Book of Abraham.

Article 8 — Sharing the Gospel with Latter-day Saints: Practical evangelism — how to have conversations that plant seeds and point to the true Christ.