2 Nephi 25:18-19

In the last days, the Savior will bring forth His words.  When He appeared and taught the Nephites, He told them:

And I command you that ye shall write these sayings after I am gone, that if it so be that my people at Jerusalem, they who have seen me and been with me in my ministry, do not ask the Father in my name, that they may receive a knowledge of you by the Holy Ghost, and also of the other tribes whom they know not of, that these sayings which ye shall write shall be kept and shall be manifested unto the Gentiles, that through the fulness of the Gentiles, the remnant of their seed, who shall be scattered forth upon the face of the earth because of their unbelief, may be brought in, or may be brought to a knowledge of me, their Redeemer.

3 Nephi 16:4

Nephi, writing the words of the Lord, shared the importance His words be written.  “For I command all men, both in the east and in the west, and in the north, and in the south, and in the islands of the sea, that they shall write the words which I speak unto them; for out of the books which shall be written I will judge the world, every man according to their works, according to that which is written” (2 Nephi 29:11). 

Mormon would emphasize the importance of the Savior’s words.  The first was in the Words of Mormon.

Wherefore, it came to pass that after Amaleki had delivered up these plates into the hands of king Benjamin, he took them and put them with the other plates, which contained records which had been handed down by the kings, from generation to generation until the days of king Benjamin.

And they were handed down from king Benjamin, from generation to generation until they have fallen into my hands.  And I, Mormon, pray to God that they may be preserved from this time henceforth.  And I know that they will be preserved; for there are great things written upon them, out of which my people and their brethren shall be judged at the great and last day, according to the word of God which is written.

Words of Mormon 1:10-11

Mormon would record the Savior’s words during his ministry to the Nephites.

Write the things which ye have seen and heard, save it be those which are forbidden.

Write the works of this people, which shall be, even as hath been written, of that which hath been.

For behold, out of the books which have been written, and which shall be written, shall this people be judged, for by them shall their works be known unto men.

And behold, all things are written by the Father; therefore out of the books which shall be written shall the world be judged.

And know ye that ye shall be judges of this people, according to the judgment which I shall give unto you, which shall be just.  Therefore, what manner of men ought ye to be?  Verily I say unto you, even as I am.

3 Nephi 27:23-27

The words that are written are to convince the Jews Christ was the true Messiah.  “And as I [Nephi] spake concerning the convincing of the Jews, that Jesus is the very Christ, it must needs be that the Gentiles be convinced also that Jesus is the Christ, the Eternal God” (2 Nephi 26:12). 

In his book, Mormon would explain why he was making this abridgement.

And I write also unto the remnant of this people, who shall also be judged by the twelve whom Jesus chose in this land; and they shall be judged by the other twelve whom Jesus chose in the land of Jerusalem.

And these things doth the Spirit manifest unto me; therefore I write unto you all.  And for this cause I write unto you, that ye may know that ye must all stand before the judgment–seat of Christ, yea, every soul who belongs to the whole human family of Adam; and ye must stand to be judged of your works, whether they be good or evil;

And also that ye may believe the gospel of Jesus Christ, which ye shall have among you; and also that the Jews, the covenant people of the Lord, shall have other witness besides him whom they saw and heard, that Jesus, whom they slew, was the ^every Christ and the very God.

Mormon 3:19-21

These words are also to let the Jews know “they need not look forward any more for a Messiah to come, for there should not any come, save it should be a false Messiah which should deceive the people; for there is save one Messiah spoken of by the prophets, and that Messiah is he who should be rejected of the Jews” (2 Nephi 25:18).

Nephi tell us according to the prophets, the Savior will come six hundred years after they left Jerusalem.  It was revealed to Nephi “his name shall be Jesus Christ, the Son of God” (2 Nephi 25:19).