The story of the origin and rise of secret combinations on earth was once contained in the record of Old Testament times.
Such plain and precious truths concerning the nature of the gospel anciently; the particulars of the plan of salvation and the then future ministry of Jesus Christ as prophesied among the ancients; and the manner in which Cain plotted with Satan to become Master Mahan, master of the great secret, that he could murder and get gain—these matters were deleted from the Bible records before that book was compiled.
They were known among the Nephites through that scriptural record we know as the brass plates. These truths were restored by revelation to Joseph Smith the Seer through his inspired translation of the Bible. (See Moses 5.)