Doctrine and Covenants 68:3 – 6

3  And this is the ensample unto them, that they shall speak as they are moved upon by the Holy Ghost.

4  And 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 unto salvation.

5  Behold, this is the promise of the Lord unto you, O ye my servants.

6  Wherefore, be of good cheer, and do not fear, for I the Lord am with you, and will stand by you; and ye shall bear record of me, even Jesus Christ, that I am the Son of the living God, that I was, that I am, and that I am to come.