“I am dying”, said the Lord, “for all men, so that through me all may have life.
“By my flesh I have redeemed the flesh of all men.
“For in my death, death will die, and fallen human nature will rise again with me.
“In this way l have become, like you, a man descended from Abraham, so that I may be made like my brethren in every respect.”
Saint Paul understood this well when he said:
Since therefore the children share in flesh and blood, he himself likewise shared in them, that through death he might destroy him who had the power of death, that is, the devil.
There was never any other way to destroy the one who had the power of death, and therefore death itself.
Christ had to give himself up for us; the one had to be the ransom for all, for he was the head of all.
Accordingly, he said in another place, namely in the psalms, when he offered himself to God his Father as a spotless sacrifice on your behalf:
You wanted no sacrifice or oblation, but you prepared a body for me. You took no pleasure in holocausts or sacrifices for sin. Then I said, “Here I am.”
He was crucified on behalf of us all and for the sake of us all, so that, when one had died instead of all, we all might live in him.
For it was impossible that he should be defeated by death or that one who is life by its very nature should yield to corruption.
Indeed, Christ’s own words prove to us that he offered his flesh for the life of the world: Holy Father, keep them. And again: For their sake I make myself holy.
He said, I make myself holy, meaning “I consecrate and offer myself as a spotless sacrifice with a sweet savour.”
For what was offered on the altar was made holy or called holy according to the Law. Therefore Christ gave his body or the life of all, and through his body planted life among us again.
How this came about I shall explain as best I can. When God’s life-giving Word came to dwell in human flesh, he remade it for its good, that is, for its life.
Being linked with flesh in this unique form of union, he made it a source of life, just as he is by his own nature, a source of life.
Thus the body of Christ gives life to those who share with him. By being among those who are liable to death, his body drives death out; by bringing forth in itself a principle capable of utterly destroying corruption, his body expels corruption.
Cyril of Alexandria (c. 376-444): Commentary on St John’s Gospel 4, 2; from the Monastic Office of Vigils, Thursday of the Fourth Week in Eastertide, Year 1.