In the wise teaching style of Benjamin, he instructs his sons, then testifies of their truthfulness. This is his witness that his words and the scriptures are the truth. Benjamin's testimony becomes part of the Book of Mormon's internal testimony that it is the truth. Of such, Hugh Nibley comments:
Hugh Nibley
"Some, impressed by the sheer mass and charge of the Book of Mormon, are now asking why it can't be seriously and respectfully treated as a myth. Lots of myths are today coming in for the most reverential treatment. But the book disdains such subterfuge, and never tires of reminding us that it is not myth but history and must stand or fall as such: 'I would that ye should remember that these sayings are true, and also that these records are true' (Mosiah 1:6). 'We know our record to be true, for behold, it is a just man who did keep the record' (3 Nephi 8:1). There may be mistakes in the record (3 Nephi 8:2), but there is no fraud or fiction: 'And whoso receiveth this record, and shall not condemn it because of the imperfections which are in it, the same shall know of greater things' (Mormon 8:12). For 'if there be faults they be the faults of man. But behold we know no fault, . . . therefore, he that condemneth, let him be aware' (Mormon 8:17). To call this record a myth is to condemn it as effectively as by calling it a fraud. We are going to approach the Book of Mormon as real history, in hopes that some reader may pick up a useful impression here or there." (Since Cumorah, Preface xiv-xv)