2 Thess 2:7 7 For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way. What is this Mystery of iniquity ? The word Mystery denotes something that cant be known naturally, but it must be revealed, or made known, sorta like when Jesus told Peter after he made that great confession Matt 16:17 17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven. And thats how it is with this Mystery of Iniquity, flesh and blood can never reveal it, but only the Spirit of God. It was actually an iniqutiy being committed by men by nature, which he is ignorant of, of which was already at work in Pauls day, so he writes in the text " the mystery of iniquity doth already work" Its already operating. The word iniquity, anomia= lawlessness, its an utter disregard for God's Law, His Written and Living Word. Now herein lies the Mystery, and it is this, that man by nature is self deceived in his self righteousness, thinking that the good things he does morally and or religiously, either makes him accepted of God, or it helps contribute to it, not realizing that such thinking is evil, is iniquity, sin and disobedience ! Its also a religious iniquity, remember when Jesus said here to religious people Matt 7:22-23 22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? 23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity. What was there iniquity ? Vs 22 , their prophesying or preaching in His Name, their casting out demons/devils, and all the wonderful works they did in His Name ! That word wonderful means: extraordinarily good, tremendous, terrific works, and may i say sincerely ! Jesus is saying these words to drug dealers, and thieves, the gangsters and prostitutes, else that would be naturally understood why He calls them " Ye that work iniquity" ! See, man by nature has no idea that his best morality, sincerity in religion, doing good to his fellow man, being a faithful loving husband or wife, that all of this, when it comes into thinking that it makes them accepted of God, worthy of reward, that its evil, its iniquity !