1 Corinthians 15:51-54—Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. For this corruptible must put on incorruption, and this mortal must put on immortality. So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory.
Many in the early church began to worry about those believers who had died. (Sleep is a metaphor for death as in John 11.) They expected Christ to return before they died, just as many believers today have the same expectation. Paul reassured them that when Christ returned, the dead would rise first and be given resurrection bodies. This was going to take place at the last trumpet. Some relate this to the last trumpet in Revelation, others to the last trumpet that called the Israelites to break camp and move during the wilderness wanderings. We will be changed in a flash. Our mortal bodies will be transformed into immortal ones that can stand before the presence of our glorious God. Our soul and spirit will receive an uncorrupted body similar to our Lord’s resurrected body. As we age and decay, we long for our new heavenly body. It helps us break our ties with this earth and long for heaven. Then death will be defeated experientially. The victory Christ won for us will be evident in everything. We are journeying through this world with the victory Christ won not fully manifested. One day it will be manifested in our new bodies as well as our transformed souls. We physically ache with health conditions and spiritually ache over sin. The victory of Christ will swallow up death and pain. All the fruits of sin will be swallowed up by this victory. Do you see how glorious that Day will be?