Final chapter of The Book of Mormon. Moroni gives us 8 exhortations, starting with exhorting us to remember how merciful God is to us and culminating with the exhortation to come unto Christ. The Book of Mormon is a record of God’s mercy to a small group of wanderers somewhere in the American continent and its ultimate purpose is to help us come unto Christ. Moroni also promises that by the power of the Holy Ghost we can know the truth of all things, which I understand to be not a question of historicity, but whether something is true to the Gospel of Jesus Christ. Ultimately our greatest desire should be for the Holy Ghost to testify that we are true to the Gospel of Jesus Christ, and we have no better tool to help us stay true than The Book of Mormon!