Doctrine and Covenants Section 61 contains some bizarre stuff. Apparently Joseph Smith and his traveling companions had a rough trip on the Missouri River, so one of them saw a vision of “the destroyer riding in power upon the face of the waters.” This caused Smith to issue another revelation which includes this:
Behold, I, the Lord, in the beginning blessed the waters; but in the last days, by the mouth of my servant John, I cursed the waters. Wherefore, the days will come that no flesh shall be safe upon the waters.
This is apparently why Mormon missionaries are not allowed to swim on their missions (no joke). Some interpreters of this passage say that the revelation only refers to the specific waters of the Missouri River, and some of the language does tend toward that view, but the verses quoted above seem to refer to all waters on the earth. The reference to John seems to refer to Revelation, perhaps something like:
and the third part of the waters became wormwood; and many men died of the waters, because they were made bitter.
Either way, this promise of “no flesh” being safe upon the waters seems like a false prophecy. Next comes a threat to Cincinnati:
And again, verily I say unto you, my servants, Sidney Rigdon, Joseph Smith, Jun., and Oliver Cowdery, shall not open their mouths in the congregations of the wicked until they arrive at Cincinnati; And in that place they shall lift up their voices unto God against that people, yea, unto him whose anger is kindled against their wickedness, a people who are well-nigh ripened for destruction.
One would think that if Cincinnati was ripened for destruction in 1831 the time would be up by now, but apparently not.