No, that's not it, my friend! You do not understand the pre-trib belief.
2Th 2:1 Now we beseech you, brethren, by the coming of our Lord Jesus Christ,//// and by our gathering together unto him,
Paul is speaking of the Second Coming and the Rapture here. Notice!
"by the coming of our Lord Jesus Christ," is the Second coming.
"and by our gathering together unto Him," is the rapture.
Do you see the "coma" between the two statements? Paul is referring to two different happenings!
This is completely wrong as there is the word
'and' that directly connects to the gathering together to Christ.
TRUTH 101 - There cannot be a gathering together unto Christ until His Coming.
The Apostle Paul is reminding the Church of what he told/wrote to them in 1 Thess 4:13-18
Brothers, we do not want you to be uninformed about those who sleep in death, so that you will not grieve like the rest, who are without hope. For since we believe that Jesus died and rose again, we also believe that God will bring with Jesus those who have fallen asleep in Him.
By the word of the Lord, we declare to you that we who are alive and remain until the coming of the Lord will by no means precede those who have fallen asleep.
For the Lord Himself will descend from heaven with a loud command, with the voice of an archangel, and with the trumpet of God,
and the dead in Christ will be the first to rise.
After that, we who are alive and remain will be caught up together with them in the clouds to meet the Lord in the air. And so we will always be with the Lord.