While speaking at the April Conference of the Church in Nauvoo in 1843, the Prophet Joseph Smith stated:
“It is not the design of the Almighty to come upon the earth and crush it and grind it to powder…There will be wars and rumours of wars, signs in the heavens above and on the earth beneath, the sun turned into darkness and the moon to blood, earthquakes in divers places,the seas heaving beyond their bounds; then will appear one grand sign of the Son of Man in heaven. But what will the world do? They will say it is a planet, a comet…”
Elder Heber C. Kimball recorded an appearance of John in the Kirtland Temple:
“When the Prophet Joseph had finished the endowments of the First Presidency, the Twelve, and the Presiding Bishops, the First Presidency proceeded to lay hands upon each of them to seal and confirm the anointing; and at the close of each blessing the whole of the quorums responded to it with a loud shout of Hosanna! Hosanna! etc.
While these things were being attended to the beloved disciple John was seen in our midst by the Prophet Joseph, Oliver Cowdery, and others.” (In Whitney, Life of Heber C. Kiimball, pp. 91-92.)
According to John Whitmer’s account of a conference of the Church on June 3, 1831, in Kirtland, Ohio, “the Spirit of the Lord fell upon Joseph [Smith] in an unusual manner, and he prophesied that John the Revelator was then among the Ten Tribes of Israel who had been led away … , to prepare them for their return from their long dispersion” (in History of the Church, 1:176).