Mosiah 28:18–19

Now this account did cause the people of Mosiah to mourn exceedingly, yea, they were filled with sorrow; nevertheless it gave them much knowledge, in the which they did rejoice. And this account shall be written hereafter; for behold, it is expedient that all people should know the things which are written in this account.

From section: Mosiah Manages the Records

From page: Zarahemla Under Monarchial Rule