The movement began with Joseph Smith in the 1820s, culminating in the publication of the Book of Mormon in 1830 and the organization of the church that year in western New York. After a series of relocations and migrations, church headquarters moved to Utah under Brigham Young in the mid-19th century. The church developed rapidly in the United States and expanded internationally in the 20th and 21st centuries.
Latter-day Saints hold that God the Father, Jesus Christ, and the Holy Ghost are distinct beings and that God continues to reveal doctrine through modern prophets. Core beliefs include a restoration of the gospel, the authority of priesthood, and a plan of salvation that emphasizes faith, repentance, baptism, and eternal families. Scripture comprises the Bible (commonly the King James Version in English) plus the Book of Mormon, Doctrine and Covenants, and Pearl of Great Price. Temples and ongoing revelation are important features of their faith.
The church has a hierarchical structure led by a President and a First Presidency, with the Quorum of the Twelve Apostles and other General Authorities. Members typically worship on Sundays, participate in the sacrament, and support a missionary program. Tithing and welfare services support church operations, education, and humanitarian aid. Genealogical research and temple ordinances are also emphasized.
As of the 2020s, the church reported tens of millions of members worldwide, with a significant global presence and a strong emphasis on family, service, education, and humanitarian efforts.
The church has faced historical and contemporary controversies, including past practices related to race and priesthood, changes in policy over time, and ongoing debates about transparency and social issues. The organization continues to address historical questions while guiding its doctrine and practices through official statements and the counsel of its leaders.