God Calls His Prophets through Orderly Channels; the Prophets Are Authorized to Declare the Word of God for the World and the Church
Doctrine and Covenants 42:11
11 Again I say unto you, that it shall not be given to any one to go forth to preach my gospel, or to build up my church, except he be ordained by some one who has authority, and it is known to the church that he has authority and has been regularly ordained by the heads of the church.
President James E. Faust said:
“The prophets, seers, and revelators have had and still have the responsibility and privilege of receiving and declaring the word of God for the world. Individual members, parents, and leaders have the right to receive revelation for their own responsibility but have no duty nor right to declare the word of God beyond the limits of their own responsibility.”
(“Continuous Revelation,” Ensign, Nov. 1989, 8.)