II Thessalonians 2:1, 2 "Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto Him, That ye be not soon shaken in mind, or be troubled, neither by spirit, nor by word, nor by letter, as from us, as that the day of Christ is at hand."
Paul is telling you to not be taken in by any means, and they will use every trick in the book to get you to join them.
II Thessalonians 2:3 "Let no man deceive you by any means: for that day shall not come, except there be a falling away first, and that man of sin be revealed, the son of perdition,"
Did you get that? Before Jesus comes, there will be a massive falling away , and Satan, who is the man of sin, also called the son of perdition, will actually sit in the his temple in Jerusalem, and the entire world will believe it.
II Thessalonians 2:4 "Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the Temple of God, shewing himself that he is God."
It is Satan who opposeth and exalteth himself above our Heavenly Father. Satan will demand that you worship him, and he will sit in his temple in Jerusalem and do and say the things to try and make you believe it. He will try to appear as you think Jesus ought to appear. I hope that in that day when Satan arrives, instead of being tempted in worshipping him, that you would find him the abomination that he is. That is why you will have your gospel armor on and in place to make a stand and be ready for those spiritual battles.
Some people are so biblically illiterate that they will try to tell you that this 36th verse is all about the rapture theory. But it doesn't say that, but the Greek is very specific, "That you stand before Christ at the judgment." You stand before Christ, after these things have come to pass. Then you will be judged by what you did while Satan was in the temple pretending to be God. Did you go to Satan and bow to him, or did you stand your ground? Be prepared to speak up when their lies and deceit are spoken to you. So now stop and think for a moment, why do you put your gospel armor on in the first place? You put on the gospel armor for the sole purpose of making a stand and defending yourself from those fiery darts of Satan's lies. Take the time an study Ephesians 6:10-20. Jesus is telling you to ask Father, pray for the wisdom so that you can be accountable on that day of Jesus' return.
