“With one ‘Special Revelation’ the Mormon Church expects its intended coverts to accept the totally unsupported testimony of a fifteen-year-old boy that nobody ever preached Jesus Christ’s gospel from the close of the apostolic age until the ‘Restoration’ through Joseph Smith, Jr., beginning in 1820! We are asked to believe that the church fathers for the first five centuries did not proclaim the true gospel-that Origen, Justin, Iraneaus, Jerome, Eusebius, Athanasius, Chrysostom, and then later Thomas Aquinas, Huss, Luther, Calvin, Zwingli, Tyndale, Wycliffe, Knox, Wesley, Whitefield, and a vast army of faithful servants of Jesus Christ all failed where Joseph Smith, Jr., was to succeed!
With one dogmatic assertion, Joseph pronounced everybody wrong, all Christian theology an abomination, and all professing Christians corrupt-all in the name of God! How strange for this to be presented as restored Christianity, when Jesus Christ specifically promised that ‘the gates of Hell’ would not prevail against the church (Matt. 16:18)! In Mormonism we find God contradicting this statement in a vision to Joseph Smith, Jr., some eighteen centuries later!” 
Courage and Godspeed,
1. Walter Martin as quoted by Josh McDowell, A Ready Defense, p. 344.