When the Savior left his disciples after his first appearance to them, "he touched with his hand the disciples whom he had chosen, one by one, even until he had touched them all, and spake unto them as he touched them. . . . the disciples bare record that he gave them power to give the Holy Ghost. And I will show unto you hereafter that this record is true." (3 Nephi 18:36-37.)
Evidently the pronoun I in this quotation refers to the historian Mormon when he promises "I will show unto you hereafter that this record is true"; that is, Mormon is going to show later in his record that the Savior did give the disciples the power to bestow the Holy Ghost. Some persons might question whether or not Mormon does indicate this later in his record. However, it is of interest to note that as soon as Moroni starts writing, he gives us the exact wording of the prayer of the Savior on this occasion. (See Moroni 2.)