1 Corinthians 15:18, 20

Then those also who have fallen asleep in Christ are lost.

But now [as things really are] Christ has in fact been raised from the dead, [and He became] the first fruits [that is, the first to be resurrected with an incorruptible, immortal body, foreshadowing the resurrection] of those who have fallen asleep [in death]. [Col 1:18]