1 Corinthians 15:51"Behold, I tell you a mystery: We shall not all sleep, but we shall all be changed"
A mystery. Something that once was hidden but now is revealed. The rapture of the church was this mystery, and still seems to be for many today. As believers, we will be transformed, changed from one thing, to another. Our corruptible bodies changed transformed into our incorruptible body, or our heavenly body Jesus has made for us.