Doesn't the Bible warn about those who seek to add to or take away from the scriptures? How can the Latter-day Saints then justify having additiona

First of all, it appears that the passages in the Old Testament that warn against such things (Deut. 4:2; 12:32) are actually warning against adding to the books of Moses, the Pentateuch. This certainly could not have reference to adding to the Old Testament in general, or else we could not in good conscience accept the thirty-four books that follow the Pentateuch. Furthermore, the warning attached to the end of the Revelation of John is a warning against adding to or taking away from "the words of the prophecy of this book" (Rev. 22:18), namely, the Apocalypse. Most important, Latter-day Saints believe that these warnings have to do with the condemnation associated with a man, an uninspired man, a man not called of God, taking upon himself the responsibility to add to or take from the canon of scripture. But it is God's right to speak beyond what he has spoken already (as he certainly did in the person and messages and works of Jesus himself), and Latter-day Saints feel that God should be allowed to direct and empower his children as need arises. It is not for us to set up bounds and stakes for the Almighty. Nowhere in the Bible itself do we learn that God will no longer speak directly to his children or add to past scripture.

(Robert L. Millet, The Mormon Faith: Understanding Restored Christianity [Salt Lake City: Deseret Book Co., 1998], 166.)4