In this short video (4:45) Ritch Sandford provides a solid overview of what the Bible says about false prophets.
At the end of the video Mr. Sandford cites Matthew 7:15-16 where Jesus says, “Beware of false prophets…You will recognize them by their fruits.”
In 1999 Mormon apostle M. Russell Ballard also cautioned, “beware of false prophets and teachers.” He listed several fruits of false prophets and teachers that will allow people to recognize them for what they are. One such fruit was that false prophets might attempt to
“redefine the nature of the Godhead, and they…arrogantly attempt to fashion new interpretations of the scriptures to demonstrate that these sacred texts should not be read as God’s words to his children but merely the utterances of uninspired men, limited by their own prejudices and cultural bias. They argue, therefore, that the scriptures require new interpretation and that they are uniquely qualified to offer that interpretation.” (“Beware of False Prophets and False Teachers,” Ensign, November 1999)
This sounds a lot like the origins of Mormonism. Indeed, Joseph Smith fares badly when his prophetic fruits are examined.
As Mr. Sandford said in his video, “Mormons…have a God-given commandment from Jesus to search out the truth of Joseph Smith.” He notes that the Bible makes it clear that all of us “will be held accountable for holding all of our spiritual leaders to God’s standard.” May we all have the courage to do so.