Paul reminds them of the gospel he preached to them, in which they stand: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures, and that he appeared to Cephas, then to the Twelve, then to more than five hundred brothers at one time, then to James, to all the apostles and, last of all, to Paul himself. Paul considers himself the least of the apostles because he persecuted the church, but by God's grace he is what he is, and all preach the same message.
He asks how some can say there is no resurrection. If there is none, Christ has not been raised, preaching and faith are futile, and those who died in Christ have perished. But Christ has been raised, the firstfruits of those who have fallen asleep. As in Adam all die, so in Christ all will be made alive, each in his own order: Christ first, then those who belong to him at his coming. Then comes the end, when he delivers the kingdom to the Father; the last enemy to be destroyed is death.
Paul answers how the dead are raised with the image of a seed: what is sown is perishable and raised imperishable, sown in dishonor and raised in glory, sown a natural body and raised a spiritual body. The first Adam became a living being; the last Adam became a life-giving spirit. As we have borne the image of the man of dust, we will bear the image of the man of heaven.
Finally, flesh and blood cannot inherit the kingdom of God. Paul reveals a mystery: we will not all sleep, but we will all be changed, in a moment, at the last trumpet. Then death will be swallowed up in victory. Thanks be to God, who gives us the victory through our Lord Jesus Christ. Therefore, be steadfast, immovable, always abounding in the work of the Lord, for your labor is not in vain.