Nephi names their greatest sin: “Ye have united yourselves … to that secret band which was established by Gadianton.” The Gadiantons have not only taken over the Nephite government, they have altered Nephite religion, and changed Nephite hearts away from their God. Nephi declares that he is speaking in the name of God, and declares that “except ye repent ye shall perish.”
This is not the end of a chapter in the 1830 edition.