Final answer:
The Book of Mormon is considered to contain the fullness of the gospel because it provides additional revelations and teachings that expand upon the biblical narrative and offer a more comprehensive understanding of Jesus Christ's ministry.
Step-by-step explanation:
The Book of Mormon is considered to contain the fullness of the gospel because it is believed to be an additional sacred scripture of the Latter Day Saint movement, alongside the Bible. Mormons believe that the Book of Mormon provides a more complete understanding of Jesus Christ's ministry and teachings, as well as the history of ancient peoples in the Americas. It is seen as a complement to the Bible and is considered divinely inspired by followers of the Mormon faith.
For example, the Book of Mormon contains an account of Jesus Christ's visit to the people in the Americas after his resurrection, which is not found in the Bible. It also contains teachings on faith, repentance, baptism, and the nature of God.
In summary, the Book of Mormon is considered to contain the fullness of the gospel because it provides additional revelations and teachings that expand upon the biblical narrative and offer a more comprehensive understanding of Jesus Christ's ministry.