These plates, which contain these records

1. Mosiah 1: 3
   3 And he also taught them concerning the records which were engraven on the plates of brass, saying: My sons, I would that ye should remember that were it not for these plates, which contain these records and these commandments, we must have suffered in ignorance, even at this present time, not knowing the mysteries of God.
2. D&C 3: 19
   19 And for this very purpose are these plates preserved, which contain these records—that the promises of the Lord might be fulfilled, which he made to his people;