3 Nephi 2:18

And thus ended the fourteenth year. And in the fifteenth year they did come forth again against the people of Nephi; and because of the wickedness of the people of Nephi, and their many contentions and dissensions, the Gadianton robbers did gain many advantages over them.

The 14th year ended. In the 15th year the robbers came against Nephi’s people again. Because of the evil of Nephi’s people and their many fights and splits, the Gadianton robbers gained many advantages over them.

The fourteenth year ended. In the fifteenth year, the robbers attacked again. But because of the Nephites’ wickedness—their constant fighting and divisions among themselves—the Gadianton robbers won many victories over them.