I love Nephi’s boldness in 1 Nephi chapter 6, when he says that he wants to persuade everyone to come unto the God of Abraham that they may be saved. I share in that pursuit.
This passage shows that a prophet from before the birth of Jesus Christ can have faith in Jesus Christ, for we are saved by His atonement. It also shows that the Book of Mormon links the faith of those who were faithful before the birth of Jesus Christ with the faith of those who lived after birth; for this faith is the same faith, yesterday, today, and forever. These are not two different churches, or religious organizations. There is no division of the faith between those who lived in Old Testament times, and those who lived afterwards.