Pay very close attention to what these verses are saying -
2 Thessalonians 2:1-4
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. 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; 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.
Take note that it is clearly saying that
"that day" shall not come till some point in time AFTER the Antichrist enters the rebuilt temple and proclaims to be God.
(what is "that day" ? - it is in verse one, the day of "our gathering together unto him" - also known as the "rapture")
.......so these verses clearly prove that the "rapture can NOT possibly be pre-trib, and there are other verses that show a post-trib "rapture".
Also read:
http://kenraggio.com/KRPN-WhenWillTh...eTakePlace.htm
http://www.endtime-truth.com/articles6.html