3 Nephi 2:16

and their young men and their daughters became exceeding fair, and they were numbered among the Nephites, and were called Nephites. And thus ended the thirteenth year.

Their young men and daughters became very beautiful. They were counted among the Nephites. They were called Nephites. That’s how the 13th year ended.

Their young men and daughters became strikingly beautiful. They were counted among the Nephites and called by that name. The thirteenth year ended.