1 Corinthians 15:51-52
Behold, I tell you a mystery; we shall not all sleep, but we shall all be changed, 52 in a moment, in the twinkling of an eye, at the last trumpet; for the trumpet will sound, and the dead will be raised imperishable, and we shall be changed.
Here the rapture is spoken of as a mystery, or as something previously hidden, but now revealed—for it was never mentioned in the Old Testament and only mentioned one time in the gospels, in John 14:1-3. The Corinthians had not heard of it before, but apparently it was revealed to Paul by the Holy Spirit.
The teaching of the rapture here is quite self-explanatory: (1) all those of the church, living and dead, at the point of the rapture will be changed, or transformed—our corruptible bodies will become incorruptible; (2) it will happen very rapidly—as fast as the movement of the eye; and (3) it will happen at the last trumpet. This simply means that God will rapture us at a precise moment of His choosing, when He gives a trumpet signal. It is called the last trumpet blast because the church is leaving earth; and so, the last trumpet signifies the end of the church era as we know it.
Some would say that this is the seventh trumpet of the Tribulation, putting the rapture at the midpoint of the Tribulation. But that teaching is wrong.
Copyright © 2014 by Stephen Nielsen
The above article is an excerpt from this book.