Whatsoever they shall speak when moved upon by the Holy Ghost shall be scripture, shall be the will of the Lord, shall be the mind of the Lord, shall be the word of the Lord, shall be the voice of the Lord, and the power of God. Doctrine & Covenants 68:4
Trivia: Who will reimburse Joseph Smith if he has to pay back the money that Ezra Thayre gave to the church?