Who defines what Mormons believe - Mormons do.
Who defines what Christians believe? Christians do.
Mormons have historically claimed that they are not Christians. In fact, their scripture imortalizes it.
The account currently found in the Pearl of Great Price was written in 1838. In this record young Joseph asked Deity “which of all the sects was right.” The Son of God answered that “they were all wrong; … that all their creeds were an abomination in his sight; that those professors were all corrupt; that: ’they draw near to me with their lips, but their hearts are far from me, they teach for doctrines the commandments of men, having a form of godliness, but they deny the power thereof.’ ” (JS—H 1:18–19.)
In an 1842 account known as the Wentworth letter, the Prophet wrote, “Two glorious personages … told me that all religious denominations were believing in incorrect doctrines, and that none of them was acknowledged of God as his church and kingdom.” (Backman, First Vision, page 169.)
Why the change now? Is it so more people can be duped into the false Christianity? So that people will be kept ignorant that Mormonism is in fact a different gospel than Christianity?
So then I’m curious, which of all the churches teach the “correct doctrines”?
Which of these Churches does not teach incorrect doctrines since they all teach different doctrines?
I would proffer that none of the churches are perfect. The only “Christian” church that has a leg to stand on in this discussion is the Holy Catholic Church. They had if first. If the protestant churches say the Catholic church went astray how can they (protestant) be perfect if they came from a broken church.