1835 First Presidency explains significance of content in Doctrine & Covenants.
Preface, in Doctrine and Covenants of the Church of the Latter Day Saints: Carefully Selected from the Revelations of God, and Compiled by Joseph Smith Junior. Oliver Cowdery, Sidney Rigdon, Frederick G. Williams (Kirtland: Frederick G. Williams, 1835), iv, The Joseph Smith Papers website, accessed August 11, 2021
We do not present this little volume with any other expectation than that we are to be called to answer to every principle advanced, in that day when the secrets of all hearts will be revealed, and the reward of every man's labor be given him.