Matthew 24:23,24 (KJV)
23 Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
False Teachings In Mormonism
There should be only one decision to make and that is to follow Jesus and what He taught in the Bible and no longer follow after the doctrines of men.