1 Corinthians 15:51 in the King James Version
Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed,
Context
50 Now I say this, brothers, that flesh and blood can’t inherit God’s Kingdom; neither does the perishable inherit imperishable.
51 Behold, I tell you a mystery. We will not all sleep, but we will 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 incorruptible, and we will be changed.