1 Kings 1:28-30

28 And it came to pass that in the ninety and fourth year they began to increase in a great degree, because there were many dissenters of the Nephites who did flee unto them, which did cause much sorrow unto those Nephites who did remain in the land.

29 And there was also a cause of much sorrow among the Lamanites; for behold, they had many children who did grow up and began to wax strong in years, that they became for themselves, and were led away by some who were Zoramites, by their lyings and their flattering words, to join those Gadianton robbers.

30 And thus were the Lamanites afflicted also, and began to decrease as to their faith and righteousness, because of the wickedness of the rising generation.