Luke 1:34-35

Ver 34. Then said Mary to the angel, How shall this be, seeing I know not a man? 35. And the angel answered and said to her, The Holy Ghost shall come upon you, and the power of the Highest shall overshadow you: therefore also that holy thing which shall he born of you shall be called the Son of God.

AMBROSE; It was Mary's part neither to refuse belief in the Angel, nor too hastily take to herself the divine message. How subdued her answer is, compared with the words of the Priest. Then said Mary to the Angel, How shall this be? She says, How shall this be? He answers, Whereby shall I know this? He refuses to believe that which he says he does not know, and seeks as it were still further authority for belief. She avows herself willing to do that which she doubts not will be done, but how, she is anxious to know. Mary had read, Behold, she shall conceive and bear a son. She believed therefore that it should be but how it was to take place she had never read, for even to so great a prophet this had not been revealed. So great a mystery was not to be divulged by the mouth of man, but of an Angel.

GREG. NYSS. Hear the chaste words of the Virgin. The Angel tells her she shall bear a son, but she rests upon her virginity, deeming her inviolability a more precious thing than the Angel's declaration. Hence she says, Seeing that I know not a man.

BASIL; Knowledge is spoken of in various ways. The wisdom of our Creator is called knowledge, and an acquaintance with His mighty works, the keeping also of His commandments, and the constant drawing near to Him; and besides these the marriage union is called knowledge as it is here.

GREG. NYSS. These words of Mary are a token of what she was pondering in the secrets of her heart; for if for the sake of the marriage union she had wished to be espoused to Joseph, why was she seized with astonishment when the conception was made known to her? seeing in truth she might herself be expecting at the time to become a mother according to the law of nature. But because it was meet that her body being presented to God as an holy offering should be kept inviolate, therefore she says, Seeing that I know not a man. As if she said, Notwithstanding that you who speak are an Angel, yet that I should know a man is plainly an impossible thing. How then can I be a mother, having no husband? For Joseph I have acknowledged as my betrothed.

GREEK EX. But mark, how the Angel solves the Virgin's doubts, and shows to her the unstained marriage and the unspeakable birth. And the Angel answered, and said to her, The Holy Spirit shall come upon you.

CHRYS. As if he said, Look not for the order of nature in things which transcend and overpower nature. Do you say, How shall this be, seeing I know not a man? Nay rather, shall it happen to you for this very reason, that you have never known a husband. For if you had, you would not have been thought worthy of the mystery, not that marriage is unholy, but virginity more excellent. It became the common Lord of all both to take part with us, and to differ with us in His nativity; for the being born from the womb, He shared in common with us, but in that He was born without cohabitation, He was exalted far above us.

GREG. NYSS. O blessed is that womb which because of the overflowing purity of the Virgin Mary has drawn to itself the gift of life! For in others scarcely indeed shall a pure soul obtain the presence of the Holy Spirit, but in her the flesh is made the receptacle of the Spirit.

ID. For the tables of our nature which guilt had broken, the true Lawgiver has formed anew to Himself from our dust without cohabitation, creating a body capable of taking, His divinity, which the finger of God has carved, that is to say, the Spirit coming upon the Virgin.

ID. Moreover, the power of the Highest shall overshadow you. Christ is the power of the most high King, who by the coming of the Holy Spirit is formed in the Virgin.

GREG By the term overshadowing, both natures of the Incarnate God are signified. For shadow is formed by light and matter. But the Lord by His Divine nature is light. Because then immaterial light was to be embodied in the Virgin's womb, it is well said to her, The power of the Highest shall overshadow you, that is, the human body in you shall receive an immaterial light of divinity. For this is said to Mary for the heavenly refreshing of her soul.

THEOPHYL; You shall conceive then not by the seed of man whom you know not, but by the operation of the Holy Spirit with which you are filled. There shall be no flame of desire in you when the Holy Spirit shall overshadow you.

GREG. NYSS. Or he says, overshadow you, because as a shadow takes its shape from the character of those bodies which go before it, so the signs of the Son's Deity will appear from the power of the Father. For as in us a certain life-giving power is seen in the material substance, by which man is formed; so in the Virgin, has the power of the Highest in like manner, by the life-giving Spirit, taken from the Virgin's body a fleshly substance inherent in the body to form a new man. Hence it follows, Therefore also that holy thing which shall be born of you.

ATHAN. For we confess that which then was taken up from Mary to be of the nature of man and a most real body, the very same also according to nature with our own body. For Mary is our sister, seeing we have all descended from Adam. BASIL; Hence also, St. Paul says, God sent forth his Son, born not (by a woman) but of a woman. For the words by a woman might convey only a mere passing expression of birth, but when it is said, of a woman, there is openly declared a communion of nature between the son and the parent.

GREG. To distinguish His holiness from ours, Jesus is stated in an especial manner to be born holy. For we although indeed made holy, are not born so, for we are constrained by the very condition of our corruptible nature to cry out with the Prophet, Behold, I was conceived in iniquity. But He alone is in truth holy, who was not conceived by the cementing of a fleshly union, nor as the heretics rave, one person in His human nature, another in His divine; not conceived and brought forth a mere man, and afterwards by his merits, obtained that He should be God, but the Angel announcing and the Spirit coming, first the Word in the womb, afterwards within the womb the Word made flesh. Whence it follows, Shall be called the Son of God.

GREEK EX. But observe, how the Angel has declared the whole Trinity to the Virgin, making mention of the Holy Spirit, the Power, and the Most High, for the Trinity its indivisible.