1 Corinthians 15:6

15:6 Then he appeared to more than five hundred of the brothers and sisters at one time, most of whom are still alive, though some have fallen asleep.

1 Corinthians 15:18

15:18 Furthermore, those who have fallen asleep in Christ have also perished.

1 Corinthians 15:20

15:20 But now Christ has been raised from the dead, the firstfruits of those who have fallen asleep.