Joseph Smith, and my father, Hyrum Smith, Brigham Young, John Taylor, Wilford Woodruff, and other choice spirits who were reserved to come forth in the fulness of times to take part in ... the building of the temples ... for the redemption of the dead, were also in the spirit world. Doctrine & Covenants 138:53

Trivia: In Section 124, who did the Lord say would heal the sick, cast out devils, and be immune to deadly poisons, and raise the dead?