The Church of Jesus Christ of Latter-day Saints prides itself in being the only true church on the face of the earth. Doctrine and Covenants 1:30 explicitly states: "And also those to whom these commandments were given, might have power to lay the foundation of this church, and to bring it forth out of obscurity [...]

The Church of Jesus Christ of Latter-day Saints came out with an official Gospel Topics essay entitled "Plural Marriage in Kirtland and Nauvoo," in October of 2014. Here is the link to this official, authoritative LDS essay: https://www.lds.org/topics/plural-marriage-in-kirtland-and-nauvoo?lang=eng Interesting to note, that if you go to http://www.lds.org, the LDS Church's official website, click "Scriptures and [...]