To what should we subscribe to be correct and sound in doctrine? What are the absolutes upon which faithful membership is based? In my opinion, they rest upon the following:
First, the fatherhood of God, the Eternal Father.
Second, the divinity of Jesus Christ as the Savior of the world.
Third, the mission of Joseph Smith as a prophet of God and the restorer of the fulness of the gospel.
Fourth, the unbroken succession of priesthood line and authority from Joseph Smith to … the prophet, seer, and revelator on the earth today. – James E. Faust, “The Abundant Life,” Ensign (CR) November 1985