Many Prophets Have Testified These Things

"One of the teachings of the Book of Mormon that is well known among the members of the Church is that the Bible has suffered a loss of many plain and precious parts. This fact was revealed to Nephi when he was given the vision his father had seen of the nations and kingdoms of the Gentiles. (1 Ne. 13).

"Other prophets frequently mentioned in the plates of brass include Zenoch, Neum and Ezias. (See 1 Ne. 19:10; Alma 33:16-17; Hel. 8:20; 3 Ne. 10:16.) The Bible itself testifies of the titles of 11 books which are no longer included and of others that are alluded to which do not include those mentioned in the Book of Mormon. (See Dictionary in the 1979 LDS edition of the Bible, "Lost Books" page 725.)

"Because the Lord has granted humans their agency, He has allowed these parts of scripture to be taken away. However, He has compensated for this loss by preserving other records to come forth in the latter days to 'make known the plain and precious things which have been taken away.' (1 Ne. 13:40.)" (Monte S. Nyman, Church News, 01/01/94)