1 Nephi 13: 39

"And after it had come forth unto them I beheld other books, which came forth by the power of the Lamb, from the Gentiles unto them, unto the convincing of the Gentiles and the remnant of the seed of my brethren, and also the Jews who were scattered upon all the face of the earth, that the records of the prophets and of the twelve apostles of the Lamb are true."

-- The Book of Mormon and the Bible have already been mentioned as books to go from the Gentiles unto the remnant of Lehi’s children. Now, here is mention of other books to come forth by the power of God. These include the Doctrine and Covenants, the Pearl of Great Price, and other scriptures not yet revealed.

-- A reminder that all scriptures point to the same thing: declaring the truth of the testimony of the prophets and apostles, which is that Jesus Christ is the one and only way to salvation.

-- It is possible that some of these other books to come forth include non-canonical scriptures. It indicates that the books to come forth are to do so by the power of God. This qualifier greatly limits the pool of candidates. However, those things that a person speaks (or writes) when moved upon by the Holy Ghost become scriptures (D&C 68:4). Some examples of non-canonized scriptures: the inspired translation of the Bible done by Joseph Smith; the general conference talks given by latter-day prophets and apostles; and other less widely pronounced declarations by the general priesthood leaders. All of these sources come forth by the power of God and have as a purpose the convincing of Gentile and Lamanite and Jew that Jesus is the Christ.

-- Several verses of this chapter have detailed the corruption of the Bible. Now, this verse is telling us that all of the latter-day books of scripture are to convince us that the records of the prophets and the apostles of the Lamb are true. Is this a contradiction of itself? NO! The record of the prophets and apostles of the Lamb are true insofar as they have been preserved. Those parts of the Bible that have been altered no longer represent the words of the prophets and apostles. Rather, they represent the work of the great and abominable church, the church of the devil. The Joseph Smith translation of the Bible helps us get a more accurate understanding of the original records of the ancient prophets and apostles as they penned them.