4 Nephi 22–23

And it came to pass that two hundred years had passed away; and the second generation had all passed away save it were a few. And now I, Mormon, would that ye should know that the people had multiplied, insomuch that they were spread upon all the face of the land, and that they had become exceedingly rich, because of their prosperity in Christ.

From section: Growth of Rival Churches

From page: Nephite Decline and Downfall