Funny you should mention that....
"For hundreds of years the world was wrapped in a veil of spiritual darkness, until there was not one fundamental truth belonging to the place of salvation ...Joseph Smith declared that in the year 1820 the Lord revealed to him that all the Christian' churches were in error, teaching for commandments the doctrines of men."
- Prophet Joseph Fielding Smith, Doctrines of Salvation, v. 3, p. 282
Apostle Bruce R. McConkie (1915 - 1985):
"...the Book of Mormon remains secure, unchanged and unchangeable, ...But with the Bible it was not and is not so....it was once in the sole and exclusive care and custody of an abominable organization [Christianity], founded by the devil himself, likened prophetically unto a great whore, whose great aim and purpose was to destroy the souls of men in the name of religion. In these hands it ceased to be the book it once was."
- Apostle Bruce R. McConkie, The Joseph Smith Translation, pp. 12, 13
Believers in the doctrines of modern Christendom will reap damnation to their souls.
- Apostle Bruce R. McConkie, Mormon Doctrine, see pp. 45-46
... all the millions of apostate Christendom have abased themselves before the mythical throne of a mythical Christ.... in large part the worship of apostate Christendom is performed in ignorance, as much so as was the worship of the Athenians who bowed the Unknown Gods.
- Apostle Bruce R. McConkie, Mormon Doctrine, pp. 269, 374-375
Prophet Ezra Taft Benson (1899 - 1994):
"This is not just another Church. This is not just one of a family of Christian churches. This is the Church and kingdom of God, the only true Church upon the face of the earth..."
- Prophet Ezra Taft Benson, Teachings of Ezra Taft Benson, p. 164-165
Prophet Gordon B. Hinckley (1910 - ):
We accept that as a statement which came to him [Joseph Smith's vision in which he was told all other religions were "abominations"], which is printed, of course, and published in his history as a statement. But we go forward with a friendly relationship, with a respect for people everywhere and with an effort to accept them as we meet them and, where opportunity exists, to talk with them and explain to them what we believe.... We dont criticize them for what they believe. We accept the good that comes of that understanding which they have, but we feel we having something to offer beyond what they have.
- Prophet Gordon B. Hinckley, interview with Richard Ostling, as quoted in Mormon America, by Richard and Joan Ostling, p. 323
Hinckley admits that the "statement" of Smith exists BUT....
Is that about right?