The Facts on the Mormon Church (Harvest House, 1991) pp. 33-34
If the Mormon prophets were divinely inspired, how does the Mormon Church explain their false prophecies?
In his own words, Joseph Smith himself emphasized:
The only way of ascertaining a true prophet is to compare his prophecies with the ancient Word of God, and see if they agree…. When, therefore, any man, no matter who, or how high his standing may be, utters, or publishes, anything that afterwards proves to be untrue, he is a false prophet.*
Bruce McConkie agrees and claims, “By their works it shall be known whether professing ministers of religion are true or false prophets. Joseph Smith was a true prophet.”*
But the Mormon Church also admits that “if his claims to divine appointment be false, forming as they do the foundation of the Church in this last dispensation, the superstructure [of the Church] cannot be stable.”*
If Smith did give false prophecies, then the superstructure of the Mormon Church is more than unstable, it simply collapses. According to Deuteronomy 18:20-22, if an alleged prophet’s prophecy did not come true, he spoke in the name of the Lord presumptuously. But if this prophet spoke in the names of false gods to lead the people astray, that prophet was to die.
Joseph Smith claimed to be a true biblical prophet. Yet he spoke in the name of false gods and taught false doctrines, thereby leading people astray from biblical truth. The fact that his prophecies did not come true proves he was a false prophet.
*For full documentation, please see The Facts on The Mormon Church.