1 Corinthians 15:23

15:23 But each in his own order: Christ, the firstfruits; then when Christ comes, those who belong to him.

1 Corinthians 15:51-52

15:51 Listen, I will tell you a mystery: We will not all sleep, but we will all be changed – 15:52 in a moment, in the blinking of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we will be changed.