These verses end Mormon’s Chapter 1 as structured on the manuscripts and the 1830 print edition. He closes with the end of the fifth year of the reign of the judges. As noted in the comments on Alma 1:1, the Maya called a five-year period a hotun, and used the hotun as a unit of history. Mormon pays attention to those years. In this case, both the essential story and the five-year period end, creating two reasons for Mormon’s ending of this chapter before beginning a new one.