Good luck finding any scripture that explicitly spells out the timing of the rapture.
2Thess 1
3 We ought always
and indeed are morally obligated [as those in debt] to give thanks to God for you, brothers and sisters, as is fitting, because your faith is growing ever greater, and the [unselfish] love of each one of you toward one another is continually increasing.
4 Therefore, we speak of you with pride among the churches of God for your steadfastness [your unflinching endurance, and patience] and your firm faith in the midst of all the persecution and [crushing] distress which you endure.
5
This is a positive proof of the righteous judgment of God [a sign of His fair verdict], so that you will be considered worthy of His kingdom, for which indeed you are suffering.
6 For after all it is
only just for God to repay with distress those who distress you, 7
and to give relief to you who are so distressed and to us as well
when the Lord Jesus is revealed from heaven with His mighty angels in a flame of fire, 8 dealing out [full and complete] vengeance to those who do not [seek to] know God and to those who ignore and refuse to obey the gospel of our Lord Jesus [by choosing not to respond to Him]. 9 These people will pay the penalty and endure the punishment of everlasting destruction, banished from the presence of the Lord and from the glory of His power, 10 when He comes to be glorified in His saints on that day [that is, glorified through the changed lives of those who have accepted Him as Savior and have been set apart for His purpose], and to be marveled at among all who have believed, because our testimony to you was believed and trusted [and confirmed in your lives].
The Thessalonians, Paul himself, and all who have believed, will be caught up in his presence when the Lord Jesus is revealed from heaven with his Angels in flaming fire, dealing out complete vengeance on those who refuse to know God and obey the Gospel.
These people will pay the penalty of everlasting destruction on that day.
All Believers on the other hand will be glorified on that day.
Jesus taught the exact same thing in Matt 25,
The Judgment
31
“But when the Son of Man comes in His glory and majesty and all the angels with Him, then He will sit on the throne of His glory. 32 All the nations will be gathered before Him [for judgment]; and He will separate them from one another, as a shepherd separates his sheep from the goats; 33 and He will put the sheep on His right [the place of honor], and the goats on His left [the place of rejection].
34 “Then the King will say to those on His right, ‘Come, you blessed of My Father [you favored of God, appointed to eternal salvation], inherit the kingdom prepared for you from the foundation of the world
41 “Then He will say to those on His left, ‘Leave Me, you cursed ones, into the eternal fire which has been prepared for the devil and his angels (demons);
46 Then these [unbelieving people] will go away into eternal (unending) punishment, but those who are righteous
and in right standing with God [will go, by His remarkable grace] into eternal (unending) life.”