So God revealed the rapture secretly to Paul on Mt. Sinai? If the pre-trib rapture was true, we would find it clearly taught in Scripture, and accepted by the Early Church Fathers. We find no such thing (the usual text quoted by pre-tribs, I Thess. 4 - teaches no such thing).
The early church, like the Thessalonian believers, did indeed expect the return of Jesus Christ to the earth and the translation of the saints before the tribulation, this teaching of Paul the Apostle has been undermined by modern Scripture-less Christendom. Search the Scriptures before believing denominational teachings as so many are cults.