Several Pre-trib scholars have of late been trying to push false writings of early history in trying to prove a 'rapture' to Christ prior to the tribulation. It's called Revisionism.
The first documented evidence of a Christian Church that held to a pre-trib gathering to Christ comes from Great Britain in the 1830's. Someone like Ribera, as a theological experiment, may have written an essay on the idea, but it still was not an accepted doctrine in ANY Christian Church prior to the 1800's. So you've got a lot of research to do.
You might start with the Last Trumpet Post-Trib Research Center, since the Christian scholar there has already traced much of the Revisionist origins from today's pre-trib school.
Yet a babe in Christ still doesn't need to listen to those outsider Revisionist debates coming from today's Pre-trib school anyway, for The Lord Jesus Christ already gave a direct statement that His return happens immediately AFTER the tribulation...
Matt 24:21-30
21 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
22 And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
23 Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
25 Behold, I have told you before.
26 Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not.
27 For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be.
28 For wheresoever the carcase is, there will the eagles be gathered together.
29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
(KJV)
So your correct, I cannot be 'moved' away from that timing which The Lord Jesus Christ declared when He returns, as He has already declared there it will occur AFTER THE TRIBULATION.
Those who refuse to listen to Christ's Own Words there would rather listen to men's doctrines instead. Those doctrines of men are like a false wall built with untempered mortar, so that when the rains come it's all washed away.