John Chrysostom
What then does Christ say? “This sickness is not unto death, but for the glory of God, that the Son of God may be glorified through it.”
See how again He shows that His glory and the Father’s glory are one. Having said, “for the glory of God,” He added, “that the Son of God may be glorified.”
“This sickness is not unto death.” Since He intended to remain there two days, He now sends them away with this message.
One should marvel at Lazarus’s sisters. After hearing that it was “not unto death,” and yet seeing him die, they were not scandalized because the outcome appeared contrary.
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Even after this they approached Christ, and did not think that He had spoken falsely. The particle “that” here signifies not cause, but result. The sickness occurred for another reason, but Christ turned it to the glory of God.
Jesus heard and said to them: “This sickness is not unto death, but for the glory of God, that the Son of God may be glorified through it.”
At what should one marvel here? At the wisdom of what was said? At the prophecy? At the manner of its fulfillment?
At the command above human power, the ineffable love for mankind, the gentleness of the words, or the honor rendered to the Father? Here everything is divine.
As God, He foretold: “This sickness is not unto death,” and a little later confirmed this by deed. He rendered glory to God, showing at the same time that the glory of the Father and of the Son is one.
By His word He comforted the sisters, giving them good hope that “this sickness is not unto death.” Lazarus is not dying.
Certainly, if he is not handed over to death, he remains alive. Yet he both is handed over and is not handed over. For if someone gives back what he has taken, in essence it turns out that he has not taken it.
Therefore this sickness is not unto death, but for the glory of God. This means that it is no longer sickness, but good tidings. It is not paralysis, but strengthening.
O sickness, physician of the weak, teacher of faith, adversary of death, defeat of the devil, ordering of salvation!
O sickness, unshaken foundation of virtue, instructor of faith, support of piety!
O sickness, healing infirmities of soul, pouring forth the streams of baptism, and preparing bright garments for the soul!
O sickness, giver of the heavenly bread, beautiful lamp of faith, snare of the devil, and seal of man!