And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:
All Commentaries on John 3:14 Go To John 3
John Chrysostom
AD 407
This again seems to depend upon what has gone before, and this too has a very close connection with it. For after having spoken of the very great benefaction that had come to man by Baptism, He proceeds to mention another benefaction, which was the cause of this, and not inferior to it; namely, that by the Cross. As also Paul arguing with the Corinthians sets down these benefits together, when he says, Was Paul crucified for you? Or were you baptized into the name of Paul? for these two things most of all declare His unspeakable love, that He both suffered for His enemies, and that having died for His enemies, He freely gave to them by Baptism entire remission of their sins.
2. But wherefore did He not say plainly, I am about to be crucified, instead of referring His hearers to the ancient type? First, that you may learn that old things are akin to new, and that the one are not alien to the other; next, that you may know that He came not unwillingly to His Passion; and again, besides these reasons, that you may learn that no harm arises to Him from the Fact, and that to many there springs from it salvation. For, that none may say, And how is it possible that they who believe in one crucified should be saved, when he himself is holden of death? He leads us to the ancient story. Now if the Jews, by looking to the brazen image of a serpent, escaped death, much rather will they who believe in the Crucified, with good reason enjoy a far greater benefit. For this takes place, not through the weakness of the Crucified, or because the Jews are stronger than He, but because God loved the world, therefore is His living Temple fastened to the Cross.