Doctrine and Covenants (D&C), book of scripture used by the The Church of Jesus Christ of Latter-day Saints.
Considered part of the scriptural cannon, along with The Book of Mormon, the Pearl of Great Price, and the Bible. The book consists mainly of chapters, called sections, which were either written personaly or dictated by the leader of the church (prophet) at that time. The vast majority of these section originate with Joseph Smith and are described as revelations to him from God. The D&C also contains revelations to later church presidents; thus the LDS and RLDS churches have different versions of it, though the material by Joseph Smith is common between them.
An earlier version of the D&C published by Joseph Smith was called the Book of Commandments, which contains much material in common with it.