Search the scriptures-search . . . and ask your Heavenly Father, in the name of His Son Jesus Christ, to manifest the truth unto you; . . . you will then know for yourselves and not for another. You will not then be dependent on man for the knowledge of God; nor will there be any room for speculation. - Teachings of the Prophet Joseph Smith, pp 11-12
I have uniformly exhorted the people to obtain this living witness each for themselves; then no man on earth can lead them astray. - Journal of Discourses, 6:100
Howbeit when he, the Spirit of truth, is come, he will guide you into all truth...
Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you: For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
Or what man is there of you, whom if his son ask bread, will he give him a stone? Or if he ask a fish, will he give him a serpent? If ye then, being evil, know how to give good gifts unto your children, how much more shall your Father which is in heaven give good things to them that ask him?
I love it that when it comes to religious things, we don't have to take anyone's word for it.