Patristic Wisdom: Looking to the Fourth Sunday in Lent

And as Moses lifted up the serpent in the wilderness, even so must the Son of Man be lifted up, that whoever believes in Him should not perish but have eternal life. For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. For God did not send His Son into the world to condemn the world, but that the world through Him might be saved. He who believes in Him is not condemned; but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God. And this is the condemnation, that the light has come into the world, and men loved darkness rather than light, because their deeds were evil. For everyone practicing evil hates the light and does not come to the light, lest his deeds should be exposed. But he who does the truth comes to the light, that his deeds may be clearly seen, that they have been done in God. (John 3:14–21)

What He says, is of this kind: Marvel not that I am to be lifted up that you may be saved, for this seems good to the Father, and He has so loved you as to give His Son for slaves, and ungrateful slaves. Yet a man would not do this even for a friend, nor readily even for a righteous man; as Paul has declared when he said, Scarcely for a righteous man will one die. Now he spoke at greater length, as speaking to believers, but here Christ speaks concisely, because His discourse was directed to Nicodemus, but still in a more significant manner, for each word has much significance. For by the expression, so loved, and that other, God the world, He shows the great strength of His love. Large and infinite was the interval between the two. He, the Immortal, Who is without beginning, the Infinite Majesty, they but dust and ashes, full of ten thousand sins, who, ungrateful, have at all times offended Him; and these He loved. Again, the words which He added after these are alike significant, when He says, that He gave His Only-begotten Son, not a servant, not an Angel, not an Archangel. And yet no one would show such anxiety for his own child, as God did for His ungrateful servants.

John Chrysostom, Homilies on the Gospel of John 27.2

Let us praise the Son first of all, venerating the blood that expiated our sins. He lost nothing of His divinity when He saved me, when like a good physician he stooped to my festering wounds. He was a mortal man, but He was also God. He was of the race of David but Adam's creator. He who has no body clothed Himself with flesh. He had a mother who, nonetheless, was a virgin. He who is without bounds bound Himself with the cords of our humanity. He was victim and high priest—yet He was God. He offered up his blood and cleansed the whole world. He was lifted up on the cross, but it was sin that was nailed to it. He became as one among the dead, but He rose from the dead, raising to life also many who had died before Him. On the one hand, there was the poverty of His humanity; on the other, the riches of His divinity. Do not let what is human in the Son permit you wrongfully to detract from what is divine. For the sake of the divine, hold in the greatest honor the humanity, which the immortal Son took on Himself for love of you.

Gregory Nazianzen, Poem 2