Mormon 8:3, 4, 6 And my father also was killed by them, and I even remain alone to write the sad tale of the destruction of my people. But behold, they are gone, and I fulfill the commandment of my father. And whether they will slay me, I know not. 4 Therefore I will write and hide up the records in the earth; and whither I go it mattereth not. … 6 Behold, four hundred years have passed away since the coming of our Lord and Savior.