The Church of Jesus Christ of Latter-day Saints has four "Standard Works" that are considered canonical:
- The Bible (Old and New Testaments)
- The Book of Mormon
- The Doctrine and Covenants
- The Pearl of Great Price
The Bible and the Book of Mormon are pretty much set in stone as to what they contain, but the other two standard works have changed over time as new revelations have been added over the past couple hundred years.
Two widely-cited official declarations from the past 20 years are "The Family: A Proclamation to the World" and "The Living Christ," but neither has been added to the standard works, despite a new edition of the standard works being published by the Church in 2013. Also, leaders address the Church every six months at General Conference – and while their addresses are universally regarded within the LDS Church as authoritative, they haven't been canonized.
Given that the LDS Church believes in living prophets, continuing revelation, and an open canon, how do they decide what becomes part of the canon?