Moroni 10:1; “Now I, Moroni, write somewhat as seemeth me good…”
Jarom 1:1-2; “Now behold, I, Jarom, write a few words according to the commandment of my father, Enos, that our genealogy may be kept. 2 And as these plates are small, and as these things are written for the intent of the benefit of our brethren the Lamanites, wherefore, it must needs be that I write a little; but I shall not write the things of my prophesying, nor of my revelations. For what could I write more than my fathers have written? For have not they revealed the plan of salvation? I say unto you, Yea; and this sufficeth me.”
1 Nephi 6:3; “And it mattereth not to me that I am particular to give a full account of all the things of my father, for they cannot be written upon these plates, for I desire the room that I may write of the things of God.”
Jacob 1:1-2; “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”
Omni 1:1; “Behold, it came to pass that I, Omni, being commanded by my father, Jarom, that I should write somewhat upon these plates, to preserve our genealogy.”
2 Peter 1:20-21; “Knowing this first, that no prophecy of the scripture is of any private interpretation. 21 For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.”
Ah-hem, point proven.