General Conference, October 1999; “When we think of false prophets and false teachers, we tend to think of those who espouse an obviously false doctrine or presume to have authority to teach the true gospel of Christ according to their own interpretation. We often assume that such individuals are associated with small radical groups on the fringes of society. However, I reiterate: there are false prophets and false teachers who have or at least claim to have membership in the Church… False prophets and false teachers are those who declare that the Prophet Joseph Smith was a duplicitous deceiver… They also attempt to redefine the nature of the Godhead, and they deny that God has given and continues to give revelation today to His ordained and sustained prophets…False prophets and false teachers are those who 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 as the utterances of uninspired men…” – Russell Ballard
Galatians 5:19-21; “Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness, 20 Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, 21 Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God.”
So if a teacher in the Priesthood class points out a false prophecy of Smith or Young, that teacher is a false teacher?