Audio recording of Helaman, Chapter 2, from The Book of Mormon.
This is the chapter in which we first encounter Gadianton, who plays an outsized role in the history of the Nephite civilization. He's like Nehor 2.0.
First-person elements appear more regularly beginning in Helaman through the rest of The Book of Mormon. They also appear in Alma, though less frequently—and less obviously. Through Mormon, Chapter 7, this commentary is from the prophet Mormon. After that, is are from his son, Moroni.