Mormonism

===Mormon fundamentalism===
{{Main|Mormon fundamentalism}}
{{more citations needed section|find=FLDS|find2=differences with mainstream LDS|date=October 2022}}

One way Mormon fundamentalism distinguishes itself from mainstream Mormonism is through the practice of [[plural marriage]].<ref>{{Cite journal |last=Hardy |first=B. Carmon |date=December 1, 2011 |title=The Persistence of Mormon Plural Marriage |url=https://scholarlypublishingcollective.org/uip/dial/article/44/4/43/248891/The-Persistence-of-Mormon-Plural-Marriage |access-date=September 15, 2022 |journal=Dialogue: A Journal of Mormon Thought|volume=44 |issue=4 |pages=43–106 |doi=10.5406/dialjmormthou.44.4.0043 |s2cid=172005470 |doi-access=free }}</ref> Fundamentalists initially broke from the LDS Church after that doctrine was discontinued around the beginning of the 20th century. Mormon fundamentalism teaches that plural marriage is a requirement for [[Exaltation (Latter Day Saints)|exaltation]] (the highest degree of salvation), which will allow them to live as gods and goddesses in the afterlife. Mainstream Mormons, by contrast, believe that a single [[Celestial marriage]] is necessary for exaltation.

In distinction with the LDS Church, Mormon fundamentalists also often believe in a number of other doctrines taught and practiced by [[Brigham Young]] in the 19th century, which the LDS Church has either abandoned, repudiated, or put in abeyance. These include:
*the [[law of consecration]] also known as the [[United Order]] (put in abeyance by the LDS Church in the 19th century);
*the [[Adam–God theory|Adam–God teachings]] taught by Brigham Young and other early leaders of the LDS Church (repudiated by the LDS Church in the mid-20th century);
*the principle of [[blood atonement]] (repudiated by the LDS Church in the mid-19th century); and
*the [[Black people and Mormonism|exclusion of black men]] from the [[Priesthood (Latter Day Saints)|priesthood]] (abandoned by the LDS Church in 1978).

Mormon fundamentalists believe that these principles were wrongly abandoned or changed by the LDS Church, in large part due to the desire of its leadership and members to assimilate into mainstream American society and avoid the persecutions and conflict that had characterized the church throughout its early years. Others believe that it was a necessity at some point for "a restoration of all things"{{quote without source|date=July 2022}} to be a truly restored Church.