Teachings of Lorenzo Snow, pg. 16; “Mormonism has acted as a leaven upon other religious faiths. Consciously or unconsciously they have absorbed and utilized it. This is especially manifest in the growth of liberal ideas among the Protestant churches within the last half century. (2 January 1902, MS, 64:22.)”
Jude 1:4; “For there are certain men crept in unawares, who were before of old ordained to this condemnation, ungodly men, turning the grace of our God into lasciviousness, and denying the only Lord God, and our Lord Jesus Christ.”
This has to be one of the most alarming things any of their prophets have ever said. Leaven is a symbol of sin in the Bible as we all know.