From a biblical perspective, the “rapture” is simply the resurrection and changing of the body at Christ’s Second Coming from the believer’s standpoint. Those who have trusted in God’s Messiah from all time will be raised from the dead or changed in the twinkling of an eye at His appearance. Unbelievers will also be resurrected/changed at the same time, and so all men will change before the judgment seat of Christ, aka, the white throne judgment. At this time the sheep and goats will be separated. The sheep will enter into the eternal state in the blessing of their redemption through Christ. The goats will enter into an eternity of pain and suffering.
The corruption of the “rapture” doctrine came about when folks started teaching this it was a separate event chronologically from the Second Coming.
BTW, if you want to see how confused folks are about the “rapture,” just ask them if Abraham, Moses, or David will be “raptured”.