2 Nephi 25:2

For I, Nephi, have not taught them many things concerning the manner of the Jews; for their works were works of darkness, and their doings were doings of abominations.

I have not taught them much about the Jewish ways. This is because their works were dark. What they did was bad.

I haven’t taught them much about the Jewish way of doing things. Their practices were full of darkness and twisted rituals.