In 1 Corinthians 15, Paul teaches on the significance of the resurrection of the Lord Jesus Christ from the dead and how that guarantees the resurrection of all those who believe in Him.
"But now Christ is risen from the dead, and has become the firstfruits of those who have fallen asleep.
For since by man came death, by Man also came the resurrection of the dead.
For as in Adam all die, even so in Christ all shall be made alive.
But each one in his own order: Christ the firstfruits, afterward those who are Christ's at His coming.
Then comes the end, when He delivers the kingdom to God the Father, when He puts an end to all rule and all authority and power.
For He must reign till He has put all enemies under His feet.
The last enemy that will be destroyed is death."
1 Corinthians 15:20-26