Master Mahan, in the religious texts of the Latter Day Saint movement, is a title assumed first by Cain and later by his descendant Lamech. The title indicates that Cain and Lamech were each the "master" of a "great secret" in which they covenanted with Satan to kill for personal gain. The term is found in Joseph Smith's translation of the Bible in Genesis 5 and in the Pearl of Great Price, a religious text of The Church of Jesus Christ of Latter-day Saints. Critics, who approach the issue from a secular perspective and argue that Smith's translation of the Bible was influenced by his cultural environment, including strong local anti-Masonry, generally suggest that the term is related to "Master Mason," the highest degree of the Blue Lodge of freemasonry. Another suggestion is that the term is related to "Mahoun," a pejorative reference to Muhammad during the Middle Ages that eventually became associated with witchcraft by Smith's era. Apologists, however, generally argue that references to "Master Mahan" were restored by Smith from missing parts of the Bible and that the term thus has Middle Eastern roots. Consequently, the LDS Church's publications suggest that the term "Mahan" can mean "mind," "destroyer," or "great one," and the prominent Mormon scholar Hugh Nibley has speculated that the term is related to Arabic and Sanskrit words meaning "keeper of a great secret."
The reference to "Master Mahan" is found in a revision by Joseph Smith of Genesis 5 of the Bible, now published in the Inspired Version of the Bible, Genesis 5, and in Chapter 5the Pearl of Great Price, Book of Moses. The passage discussing the term begins after the ritual sacrifice by Cain and Abel, when God accepted Abel's sacrifice of a sheep but not Cain's sacrifice of crops. According to the passage, the angry Cain made a secret pact with Satan, who asked Cain: After entering the secret pact with Satan, Cain said, "Truly I am Mahan, the master of this great secret, that I may murder to get gain." Then, the passage comments, "Wherefore Cain was called Master Mahan; and he gloried in his wickedness." The arrangement was referred to as a "secret combination". Later, the passage states that Cain's descendant Lamech had "slain a man to wounding, and a young man to hurt," and Lamech "entered into a covenant with Satan, after the manner of Cain, wherein he became Master Mahan, master of the great secret which was administered unto Cain by Satan." When a man named Irad, one of the sons of Enochwho knew about Lamech's secret pact, revealed the secret to others, the passage states that Lamech killed him to enforce the blood oath of secrecy.
Theories about etymology
A footnote to Moses 5:31 in the LDS Church edition of the Pearl of Great Price states, "'Mind,' 'destroyer,' and 'great one' are possible meanings of the roots evident in 'Mahan,'" but no further explanation is provided. In referring to the footnote, Matthew B. Brown, a Mormon apologist, has stated that he believes that "Mahan" means "destroyer" because "the Hebrew word maha means 'destroy,' and the addition of an n would make the word a noun. Hence, maha = destroy." Some commentators have suggested that "Master Mahan" is derived or related to "Master Mason," the highest degree of the Blue Lodge of Freemasonry. Brown stated, "Anti-Mormon critics have long claimed that Master Mahan is a thinly veiled variation of Master Mason" and believes that "the presence of this title in LDS scripture clearly demonstrates that Joseph Smith plagiarized Masonic material for his creative ventures." D. Michael Quinn has suggested that interpretation to "ignore textual and linguistic context" of the passage and, as an alternative, he favors the interpretation of the phrase's derivation from "Mahoun."
In the video game Assassin's Creed II, the player is required to find and decode "glyphs" in the game world that reveal more of the game's plot. Decoding the glyph at the Ospedale degli Innocenti in Florence will begin a puzzle sequence in which Moses 5:31 is quoted.