The words of Moroni, after receiving the record of his father, are as follows, 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 fulfil the commandment of my father (Mormon 8:3).
Mormon hopes that later, Moroni will be able to write concerning Christ, that perhaps some day it may profit them. Moroni finishes the record of Mormon (see Mormon chapters 8-9) and abridges the record of the Jaredites. Next, he records that he did not expect to write any more, but according to the wishes of Mormon, he was preserved to write the treasure called the Book of Moroni, I had supposed not to have written more, but I have not as yet perished…Wherefore, I write a few more things contrary to that which I had supposed…that perhaps they may be of worth unto my brethren, the Lamanites, in some future day, according to the will of the Lord (Moroni 1:1,4).