We read in the JST
Genesis 50:31 Wherefore the fruit of thy loins shall write, and the fruit of the loins of Judah shall write; and that which shall be written by the fruit of thy loins, and also that which shall be written by the fruit of the loins of Judah, shall grow together unto the confounding of false doctrines, and laying down of contentions, and establishing peace among the fruit of thy loins, and bringing them to a knowledge of their fathers in the latter days; and also to the knowledge of my covenants, saith the Lord.
Have false doctrines been confounded? Which ones?
Have contentions been laid down, set aside? Among who?
Has peace been established among the descendants of Joseph (I believe that is who it is speaking of)? Where?
Has it brought knowledge of their fathers to them? Covenants?
This is what the title page has to say about the Book of Mormon:
Wherefore, it is an abridgment of the record of the people of Nephi, and also of the Lamanites—Written to the Lamanites, who are a remnant of the house of Israel; and also to Jew and Gentile—Written by way of commandment, and also by the spirit of prophecy and of revelation—Written and sealed up, and hid up unto the Lord, that they might not be destroyed—To come forth by the gift and power of God unto the interpretation thereof—Sealed by the hand of Moroni, and hid up unto the Lord, to come forth in due time by way of the Gentile—The interpretation thereof by the gift of God.
An abridgment taken from the Book of Ether also, which is a record of the people of Jared, who were scattered at the time the Lord confounded the language of the people, when they were building a tower to get to heaven—Which is to show unto the remnant of the house of Israel what great things the Lord hath done for their fathers; and that they may know the covenants of the Lord, that they are not cast off forever—And also to the convincing of the Jew and Gentile that Jesus is the Christ, the Eternal God, manifesting himself unto all nations—And now, if there are faults they are the mistakes of men; wherefore, condemn not the things of God, that ye may be found spotless at the judgment-seat of Christ.
Has the Book of Mormon convinced Jew and Gentile that Jesus Christ is the Eternal God?
Has it shown the remnant of the house of Isreal that God did great things for their fathers? Given knowledge of the convenants made?
Has it been received by the Lamanites to whom it was written? Who are the Lamanites?