Let's look at the part of the Bible where Christ does address His return in relation to the Tribulation:
“Immediately after the tribulation of those days the sun will be darkened, and the moon will not give its light; the stars will fall from heaven, and the powers of the heavens will be shaken. “Then the sign of the Son of Man will appear in heaven, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory. “And He will send His angels with a great sound of a trumpet, and they will gather together His elect from the four winds, from one end of heaven to the other." - Matt. 24:29-31
At least 3 things are evident in this one passage:
1. Christ clearly mentions the gathering of the saints happening AFTER the Tribulation.
2. Christ clearly says the world will see Him return.
3. Christ clearly says the world will see His followers being gathered to Him. Nothing in there is mentioned about people mysteriously disappearing out of thin air.
Now what kind of tribulation is Christ speaking about here? The answer is in verses 21-22 of the same chapter:
“For then there will be great tribulation, such as has not been since the beginning of the world until this time, no, nor ever shall be. And unless those days were shortened, no flesh would be saved; but for the elect’s sake those days will be shortened."
As anyone can see, Christ is clearly speaking of the Great Tribulation here. This event is also chronologically placed before His return. And before any Pre-Tribber or Mid-Tribber can argue that Christ was just giving general prophecies with no concrete timeline being established, Revelation places the timeline of everything He said concerning the end-time signs, His return, and even the gathering of the saints in the same exact order. The only biblical view the Bible teaches is Post-Trib. Anything else is a lie.