2Th 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;

 

The falling away in verse 3 can not be a falling away of the faith so as the man of sin can be revealed, for verse 7 tells us that he who now letteth will let until he be taken out of the way, then will the man of sin be revealed.

 

2Th 2:7  For the mystery of iniquity doth already work: only he who now letteth (katecho, restrains) will let, until he be taken out of the way.
2Th 2:8  And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming:

 

So who is he that is taken out of the way?

 

2Th 2:1  Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto him,

 

The Holy Spirit filled body of Christ.

 

 

G2722

κατέχω

katechō

kat-ekh'-o

From G2596 and G2192; to hold down (fast), in various applications (literally or figuratively): - have, hold (fast), keep (in memory), let, X make toward, possess, retain, seize on, stay, take, withhold.

 

John Too