The Doctrine and Covenants is a canonical text of an unusual kind. It is not narrative, like the Gospels; not law-code, like Leviticus; not a collection of letters, like the Pauline epistles. It is a compendium of revelations — discrete texts, most received by Joseph Smith Jr., each responding to a particular moment, question, or crisis in the early life of the church.
That occasional character is its defining feature. The revelations were received during a turbulent decade and a half — the founding of the church, repeated persecution and forced migration, and the rapid working-out of its doctrine and organization. To read the Doctrine and Covenants is to read a community being formed in real time.
Structurally, the book is a single volume of 138 numbered sections, arranged in roughly chronological order, followed by two Official Declarations. The Declarations record two later, consequential announcements: the 1890 Manifesto ending the practice of plural marriage (Official Declaration 1) and the 1978 revelation extending priesthood ordination to all worthy male members regardless of race (Official Declaration 2).
The book’s doctrinal reach is wide. It sets out the organization of the priesthood (sections 13, 84, and 107); the ordinances and purposes of temples (sections 124 and 131); and, in section 76, an expansive vision of the afterlife as three degrees of glory. Section 132 records the revelation on eternal marriage. Throughout, the book presses a single conviction: that revelation did not end with the biblical canon, but continues.
Its defining trait is its voice. Many sections are direct, first-person speech from the Lord — “I, the Lord” — rather than the prophet’s report about God. Section 1, placed first as the canon’s own preface though not the first received, frames the whole collection this way (Sections 1↗); section 76 closes its vision with a first-person testimony of the risen Christ (Sections 76:22–24↗). The result is scripture in which the Saints hear God speak directly to their condition — to a specific question, in a specific crisis, in a specific year — and through which the work of the Restoration unfolded revelation by revelation.