2 Thessalonians 2:1 Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto him, Looks like Paul is talking about the second coming of the Lord! 2:2 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. I like to look at this statement as the beginning of the end times. It's at hand... 2:3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition; 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. Don't get fooled is the message. Falling Away first and; Man of Sin is revealed! Here we go with my literal reading of the Word. A falling away is defiantly happening now, more than in the history that I know of. But it's sticking with me that the AC (man of sin) will be revealed. To whom? Seems pretty evident Paul's talking to us, God's children. So before His (Christ's) coming, we're going to see him (The Anti-Christ) and know who he is. That's what revealed means, doesn't it? Like Guttenburg says in his sig... "Third Coming. I don't think so."
I think the 7 churches knew exactly who the man of perdition was. He leveled the temple and they saw him do it.