Joseph's Last Charge & What Really Happened

Why was D&C 107 and D&C 124:124 standing in the way of claims that Brigham possessed the sole ability to use the sealing power? What was the key prophecy Joseph gave to William Marks about the practice of polygamy within the church, just before he was murdered? Why would Joseph putting William Marks into the High Council give him the potential authority to sever even those in the twelve from the church for practicing polygamy?

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