See 3 Nephi 18:36-38.
Jeffrey R. Holland
“What Moroni first recorded in the book carrying his own name were vignettes—a brief catalog, if you will—of things he felt needed to be recorded before he died and the Book of Mormon saga ended. These included the words of Christ to his twelve disciples when they were commissioned to bestow the Holy Ghost by the laying on of hands, the prayer by which priests and teachers were ordained, the sacramental prayers, and instructions as to how those who were baptized were to be received into the ‘church of Christ’ and numbered among the ’people of Christ.’” (Christ And The New Covenant, p. 332 – 333)