In keeping with the long-established pattern of the Lord, several key events had to occur for His Church to be restored:
The first occurred in 1820, when, through the First Vision, the heavens were opened and Joseph Smith learned the true nature of God the Father and His Son, Jesus Christ, and received instruction from Them.
Second was the coming forth of the Book of Mormon, providing a second witness of the divinity of Jesus Christ and confirming that Joseph Smith was a prophet.
Finally, the restoration of the Aaronic and Melchizedek Priesthood provided the authority to administer the ordinances necessary for salvation.
“We declare to the world that the fulness of the gospel of Jesus Christ has been restored to the earth.”—Elder L. Tom Perry