Brigham Young once stated that Joseph”‘s consent was required for a person to be able to enter into the celestial kingdom of heaven, because Joseph was now reigning there, like God. He also said that Joseph “was a god to us” and that he himself was “an apostle of Joseph Smith,” saying that “every spirit that does not confess that God sent Joseph Smith and revealed the everlasting gospel to and through him, is of Anti-christ.”

If you'd like the sources of these quotes in context (in the early LDS publication, Journal of Discourses), search for the exact wording of the quotes at UTLM.org, or in any search engine.

For more information, see The Mormon Mirage 3rd Edition:  A Former Member Looks at the Mormon Church Today (Zondervan, 2009). Also available as an audiobook and as an expanded-text E-book for Nook, Kindle and other reading devices.