10 For He came down and died, and by that death delivered us from death: being slain by death, He slew death. And you know, brethren, that this death entered into the world through the devil's envy. “God made not death,” says the Scripture, “nor delights He in the destruction of the living; but He created all things to be.” But what says it here? “But by the devil's envy, death entered into the whole world.” To the death offered for our entertainment by the devil, man would not come by constraint; for the devil had not the power of forcing, but only cunning to persuade. Had you not consented, the devil had brought in nothing: your own consenting, O man, led you to death. Of the mortal are mortals born; from immortals we have become mortals. From Adam all men are mortal; but Jesus the Son of God, the Word of God, by which all things were made, the only Son equal with the Father, was made mortal: “for the Word was made flesh, and dwelt among us.”
Source: Tractates on the Gospel of John (New Advent)