Even though we do not have the complete record of the sacramental prayers until Moroni 4 and 5, the language here “always remember me ye shall have my Spirit to be with you,” is sufficiently close to the language of the prayer over the bread as recorded in Moroni 4:3 that it is most certain that the origin of those sacramental prayers in Moroni was this experience. During this time, Nephi as author is writing down information after the fact, and is obviously leaving out certain information, such as the words of the prayer Jesus uttered before the children and the rest of the multitude. It is most likely that Nephi elected to leave them out of his record, but they were preserved in the large plate tradition and from there into common practice. Moroni would have been able to write them down from either source.