YES HE DID. And it is written in Matthew 24:29-31 and Mark 13:24-27 emphatically, and it aligns perfectly with the gathering of the Church that Apostle Paul taught in 1 Thessalonians 4. So put out another LIE against God's Word why don't ya.
That is so... ignorant. You want His coming to rapture the Church to be prior to the tribulation so bad, you create vanity even against the simple English. The "great tribulation" IS "those days" He was speaking of!
Look how silly your idea is with going against what Jesus revealed...
Matt 24:21
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.
KJV
Matt 24:29-31
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.
31 And He shall send His angels with a great sound of a trumpet, and they shall gather together His elect from the four winds, from one end of heaven to the other.
KJV
There can be NO debate as to what timing Jesus pointed to there.
The gathering event in verse 31 parallels 1 Thessalonians 4 about Jesus bringing the 'asleep' saints with Him when He comes. In the Mark 13:27 version, it's about His gathering of the "caught up" saints still alive on earth at His coming.
So either you are so... deceived with heeding men's false doctrines of a pre-trib rapture theory, or you intentionally try to deceive brethren with that false theory. I'd rather think you are just deceived from listening to men's false doctrines, and not the latter.