1-corinthians 15:21

For since by man came death - Mortality came by Adam, immortality by Christ; so sure as all have been subjected to natural death by Adam, so sure shall all be raised again by Christ Jesus. Mortality and immortality, on a general ground, are the subject of the apostle's reasoning here; and for the explanation of the transgression of Adam, and the redemption by Christ, see the notes on Romans 5:10, etc.

For since by man came death - By Adam, or by means of his transgression; see 1 Corinthians 15:22. The sense is, evidently, that in consequence of the sin of Adam all people die, or are subjected to temporal death. Or, in other words, man would not have died had it not been for the crime of the first man; see the note on Romans 5:12. This passage may be regarded as proof that death would not have entered the world had it not been for transgression; or, in other words, if man had not sinned, he would have remained immortal on the earth, or would have been translated to heaven, as Enoch and Elijah were, without seeing death. The apostle here, by "man," undoubtedly refers to Adam; but the particular and specific idea which he intends to insist on is, that, as death came by human nature, or by a human being, by a man, so it was important and proper that immortality, or freedom from death, should come in the same way, by one who was a man. Man introduced death; man also would recover from death. The evil was introduced by one man; the recovery would be by another man.

By man came also - By the Lord Jesus, the Son of God in human nature. The resurrection came by him, because he first rose - first of those who should not again die; because he proclaimed the doctrine, and placed it on a firm foundation; and because by his power the dead will be raised up. Thus, he came to counteract the evils of the fall, and to restore man to more than his primeval dignity and honor. The resurrection through Christ will be with the assurance that all who are raised up by him shall never die again.