Paul addressed the Pretribulation Rapture teachers in 2Th 2:1-5. When someone told the Thessalonians the rapture was at hand or could happen at any moment, the Thessalonians became confused about what Paul taught them. The fellow who said this was a Pretribulation Rapture teacher because when he said the rapture could happen at any moment the Antichrist had not yet emerged on the scene. In other words, he was teaching the rapture occurs before the Antichrist rises to power. In order for the Thessalonians to become confused about what Paul taught them they must have esteemed the Pretribulation Rapture teacher as Pastors are esteemed by believers today; otherwise the believers would not have taken him seriously. When Paul heard about this he wrote the letter recorded in 2Th. 2:1-5 and told the Thessalonians not to listen to the Pretribulation Rapture teacher because the rapture or our gathering to the Lord does not occur until after the the falling away and after the Antichrist seats himself in Jerusalem displaying himself as God. The scriptures tell us the Antichrist doesn’t seat himself in Jerusalem until 3 1/2 years after he emerges on the scene.
2Th. 2:1 Now we request you, brethren, with regard to the coming of our Lord Jesus Christ, and our gathering together to Him, 2 that you may not be quickly shaken from your composure or be disturbed either by a spirit or a message or a letter as if from us, to the effect that the day of the Lord has come. 3 Let no one in any way deceive you, for it will not come unless the apostasy comes first, and the man of lawlessness is revealed, the son of destruction, 4 who opposes and exalts himself above every so-called god or object of worship, so that he takes his seat in the temple of God, displaying himself as being God. 5 Do you not remember that while I was still with you, I was telling you these things?
2Th. 2:1 Now we request you, brethren, with regard to the coming of our Lord Jesus Christ, and our gathering together to Him, 2 that you may not be quickly shaken from your composure or be disturbed either by a spirit or a message or a letter as if from us, to the effect that the day of the Lord has come. 3 Let no one in any way deceive you, for it will not come unless the apostasy comes first, and the man of lawlessness is revealed, the son of destruction, 4 who opposes and exalts himself above every so-called god or object of worship, so that he takes his seat in the temple of God, displaying himself as being God. 5 Do you not remember that while I was still with you, I was telling you these things?