Miriam,
Here are pertinent verses from the Book of Mormon to answer your question:
Mormon 9:30 Behold, I speak unto you as though I spake from the dead; for I know that ye shall have my words.
31 Condemn me not because of mine imperfection, neither my father, because of his imperfection, neither them who have written before him; but rather give thanks unto God that he hath made manifest unto you our imperfections, that ye may learn to be more wise than we have been.
32 And now, behold, we have written this record according to our knowledge, in the characters which are called among us the reformed Egyptian, being handed down and altered by us, according to our manner of speech.
33 And if our plates had been sufficiently large we should have written in Hebrew; but the Hebrew hath been altered by us also; and if we could have written in Hebrew, behold, ye would have had no imperfection in our record.
34 But the Lord knoweth the things which we have written, and also that none other people knoweth our language; and because that none other people knoweth our language, therefore he hath prepared means for the interpretation thereof.
Jacob 1:1 For behold, it came to pass that fifty and five years had passed away from the time that Lehi left Jerusalem; wherefore, Nephi gave me, Jacob, a commandment concerning the small plates, upon which these things are engraven.
2 And he gave me, Jacob, a commandment that I should write upon these plates a few of the things which I considered to be most precious; that I should not touch, save it were lightly, concerning the history of this people which are called the people of Nephi.
3 For he said that the history of his people should be engraven upon his other plates, and that I should preserve these plates and hand them down unto my seed, from generation to generation.
4 And if there were preaching which was sacred, or revelation which was great, or prophesying, that I should engraven the heads of them upon these plates, and touch upon them as much as it were possible, for Christ’s sake, and for the sake of our people.
Enos 1:1 Behold, it came to pass that I, Enos, knowing my father that he was a just man—for he taught me in his language, and also in the nurture and admonition of the Lord—and blessed be the name of my God for it—
13 And now behold, this was the desire which I desired of him—that if it should so be, that my people, the Nephites, should fall into transgression, and by any means be destroyed, and the Lamanites should not be destroyed, that the Lord God would preserve a record of my people, the Nephites; even if it so be by the power of his holy arm, that it might be brought forth at some future day unto the Lamanites, that, perhaps, they might be brought unto salvation—
14 For at the present our strugglings were vain in restoring them to the true faith. And they swore in their wrath that, if it were possible, they would destroy our records and us, and also all the traditions of our fathers.
15 Wherefore, I knowing that the Lord God was able to preserve our records, I cried unto him continually, for he had said unto me: Whatsoever thing ye shall ask in faith, believing that ye shall receive in the name of Christ, ye shall receive it.
16 And I had faith, and I did cry unto God that he would preserve the records; and he covenanted with me that he would bring them forth unto the Lamanites in his own due time.
17 And I, Enos, knew it would be according to the covenant which he had made; wherefore my soul did rest.
Jarom 1: 13 And it came to pass that two hundred and thirty and eight years had passed away—after the manner of wars, and contentions, and dissensions, for the space of much of the time.
14 And I, Jarom, do not write more, for the plates are small. But behold, my brethren, ye can go to the other plates of Nephi; for behold, upon them the records of our wars are engraven, according to the writings of the kings, or those which they caused to be written.
15 And I deliver these plates into the hands of my son Omni, that they may be kept according to the commandments of my fathers.
Mormon 1:1 And now I, Mormon, make a record of the things which I have both seen and heard, and call it the Book of Mormon.
2 And about the time that Ammaron hid up the records unto the Lord, he came unto me, (I being about ten years of age, and I began to be learned somewhat after the manner of the learning of my people) and Ammaron said unto me: I perceive that thou art a sober child, and art quick to observe;
3 Therefore, when ye are about twenty and four years old I would that ye should remember the things that ye have observed concerning this people; and when ye are of that age go to the land Antum, unto a hill which shall be called Shim; and there have I deposited unto the Lord all the sacred engravings concerning this people.
4 And behold, ye shall take the plates of Nephi unto yourself, and the remainder shall ye leave in the place where they are; and ye shall engrave on the plates of Nephi all the things that ye have observed concerning this people.
:shrug:
