Vision, 16 February 1832 [D&C 76]

But great and marvelous are the works of the Lord  and the mistries of his kingdom which he shewed  unto us which surpasseth all understanding in glory  and <in> might and in dominion which he commanded  us we should not write while we were yet in the  spirit and are not lawful for men to utter neither  is man capable to make them known for they  are only to be seen and understood by the power  of the holy ghost which God bestows on those who  love him and purifies themselves before him to  whom he grants the privalege of seeing and knowing  for themselves that through the power and manifestation  of the spirit while in the fless [flesh] they may be able  to bear his presence in the world of glory and to  God and the Lamb be glory and honor and dominion  for ever and ever Amen
Joseph Smith Jr [p. 10]
The religious world contemporary to the church’s founding customarily classified humans as either saints or sinners, righteous or wicked, bound for heaven or hell. But JS concluded that the concept of heaven “must include more kingdoms than one.” On 16 February 1832, while working on a revision of the Bible, JS and Sidney Rigdon reported a vision of the premortal and postmortal worlds. This revelation identified three heavenly glories and also described a graded afterlife. JS stated that “nothing could be more pleasing to the Saint.”
JS and Frederick G. Williams copied this text into Revelation Book 2 between 4 March and 8 March 1832. Simply identified as “the Vision,” it is dated 16 February 1832 at Portage County, Hiram Township, Ohio. John Whitmer later recorded the text in Revelation Book 1, where it is designated “A Vision of Joseph and Sidney 16 February 1832 given in Portage County, Hiram Township, Ohio.” Sidney Gilbert also copied it into his revelation notebook in 1832. The 1835 Doctrine and Covenants included this revelation, with the subheading “A Vision,” but gave no date or location.