9 Why, then, said the Son to the mother, “Woman, what have I to do with you? Mine hour is not yet come?” Our Lord Jesus Christ was both God and man. According as He was God, He had not a mother; according as He was man, He had. She was the mother, then, of His flesh, of His humanity, of the weakness which for our sakes He took upon Him. But the miracle which He was about to do, He was about to do according to His divine nature, not according to His weakness; according to that wherein He was God not according to that wherein He was born weak.
But the weakness of God is stronger than men. His mother then demanded a miracle of Him; but He, about to perform divine works, so far did not recognize a human womb; saying in effect, “That in me which works a miracle was not born of you, you gave not birth to my divine nature; but because my weakness was born of you, I will recognize you at the time when that same weakness shall hang upon the cross.” This, indeed, is the meaning of “Mine hour is not yet come.” For then it was that He recognized, who, in truth, always did know.
He knew His mother in predestination, even before He was born of her; even before, as God, He created her of whom, as man, He was to be created, He knew her as His mother: but at a certain hour in a mystery He did not recognize her; and at a certain hour which had not yet come, again in a mystery, He does recognize her. For then did He recognize her, when that to which she gave birth was a-dying. That by which Mary was made did not die, but that which was made of Mary; not the eternity of the divine nature, but the weakness of the flesh, was dying.
He made that answer therefore, making a distinction in the faith of believers, between the who; and the how, He came. For while He was God and the Lord of heaven and earth, He came by a mother who was a woman. In that He was Lord of the world, Lord of heaven and earth, He was, of course, the Lord of Mary also; but in that wherein it is said, “Made of a woman, made under the law,” He was Mary's son. The same both the Lord of Mary and the son of Mary; the same both the Creator of Mary and created from Mary.
Marvel not that He was both son and Lord. For just as He is called the son of Mary, so likewise is He called the son of David; and son of David because son of Mary. Hear the apostle openly declaring, “Who was made of the seed of David according to the flesh.” Hear Him also declared the Lord of David; let David himself declare this: “The Lord said to my Lord, Sit on my right hand.” And this passage Jesus Himself brought forward to the Jews, and refuted them from it. How then was He both David's son and David's Lord?
David's son according to the flesh, David's Lord according to His divinity; so also Mary's son after the flesh, and Mary's Lord after His majesty. Now as she was not the mother of His divine nature, while it was by His divinity the miracle she asked for would be wrought, therefore He answered her, “Woman, what have I to do with you?” But think not that I deny you to be my mother: “Mine hour is not yet come;” for in that hour I will acknowledge you, when the weakness of which you are the mother comes to hang on the cross.
Let us prove the truth of this. When the Lord suffered, the same evangelist tells us, who knew the mother of the Lord, and who has given us to know about her in this marriage feast,— the same, I say, tells us, “There was there near the cross the mother of Jesus; and Jesus says to His mother, Woman, behold your son! And to the disciple, Behold your mother!” He commends His mother to the care of the disciple; commends His mother, as about to die before her, and to rise again before her death. The man commends her a human being to man's care. This humanity had Mary given birth to. That hour had now come, the hour of which He had then said, “Mine hour is not yet come.”
Source: Tractates on the Gospel of John (New Advent)