"If you challenge a Mormon about their beliefs, they will LIE that this is not what they believe. In Mormonism, it is called 'lying for the Lord,' which teaches them that it is OK to lie about their true beliefs in order to advance the agenda of their cult. This is why when asked about their secretive "temple rituals" their founder Smith plagiarized from the Masonic cult, Mormons will tell you they are sacred and not secret, to keep people from knowing about their blood oaths to the Mormon cult above everything else, or the role playing that includes worshipping Satan."
-- The "world's leading Internet Evangelist" Bill Keller in a Christian Newswire piece. While Keller is an all around jackass, he is correct that Mormons are taught that "lying for the Lord" is acceptable to protect church secrets about their rituals. (Hat tip to Joe.)