1 Corinthians 15:20

¹⁸ Then those also who have fallen asleep in Christ have perished.

¹⁹ If our hope in Christ is for this life alone, we are to be pitied more than all men.

But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep.

²¹ For since death came through a man, the resurrection of the dead comes also through a man.

²² For as in Adam all die, so in Christ all will be made alive.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep.
KJV: But now is Christ risen from the dead, and become the firstfruits of them that slept.
WEB: But now Christ has been raised from the dead. He became the first fruit of those who are asleep.
ASV: But now hath Christ been raised from the dead, the firstfruits of them that are asleep.
DARBY: (But now Christ is raised from among [the] dead, first-fruits of those fallen asleep.
BLB: But now Christ has been raised out from the dead, the firstfruit of those having fallen asleep.

ÅB: Men nå har Kristus stått opp fra de døde og er blitt førstegrøden av de som har sovnet inn.
OTB: Men nå er Kristus oppreist fra de døde, førstegrøden av dem som har gått bort.
B1930: Men nu er Kristus opstanden fra de døde og er blitt førstegrøden av de hensovede.

1 Corinthians 15:23
But each in his own turn: Christ the firstfruits; then at His coming, those who belong to Him.
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Revelation 1:5
and from Jesus Christ, the faithful witness, the firstborn from the dead, and the ruler of the kings of the earth. To Him who loves us and has released us from our sins by His blood,
Read in context
Acts 26:23
that the Christ would suffer, and as the first to rise from the dead, would proclaim light to our people and to the Gentiles.”
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1 Peter 1:3
Blessed be the God and Father of our Lord Jesus Christ! By His great mercy He has given us new birth into a living hope through the resurrection of Jesus Christ from the dead,
Read in context
Colossians 1:18
And He is the head of the body, the church; He is the beginning and firstborn from among the dead, so that in all things He may have preeminence.
Read in context
Romans 8:11
And if the Spirit of Him who raised Jesus from the dead is living in you, He who raised Christ Jesus from the dead will also give life to your mortal bodies through His Spirit, who lives in you.
Read in context
1 Corinthians 15:6
After that, He appeared to more than five hundred brothers at once, most of whom are still living, though some have fallen asleep.
Read in context