Helaman 2:12–14

And more of this Gadianton shall be spoken hereafter. And thus ended the forty and second year of the reign of the judges over the people of Nephi. And behold, in the end of this book ye shall see that this Gadianton did prove the overthrow, yea, almost the entire destruction of the people of Nephi. Behold I do not mean the end of the book of Helaman, but I mean the end of the book of Nephi, from which I have taken all the account which I have written.

From section: Gadianton Genesis

From page: Gadianton Period