Ether 1:4

therefore I do not write those things which transpired from the days of Adam until that time; but they are had upon the plates; and whoso findeth them, the same will have power that he may get the full account.

So I won’t write about those things. But they are written on the plates. Anyone who finds them can read the full story.

so I won’t write about those earlier times. But it’s all there on the plates. Anyone who finds them can read the full story.