Reply Obj. 3: As Ambrose says on Luke 1:11: "We are disturbed, and lose our presence of mind, when we are confronted by the presence of a superior power." And this happens not only in bodily, but also in imaginary vision. Wherefore it is written (Gen. 15:12) that "when the sun was setting, a deep sleep fell upon Abram, and a great and darksome horror seized upon him." But by being thus disturbed man is not harmed to such an extent that therefore he ought to forego the vision of an angel. First because from the very fact that man is raised above himself, in which matter his dignity is concerned, his inferior powers are weakened; and from this results the aforesaid disturbance: thus, also, when the natural heat is drawn within a body, the exterior parts tremble. Secondly, because, as Origen says (Hom. iv in Luc.): "The angel who appeared, knowing hers was a human nature, first sought to remedy the disturbance of mind to which a man is subject." Wherefore both to Zachary and to Mary, as soon as they were disturbed, he said: "Fear not." For this reason, as we read in the life of Anthony, "it is difficult to discern good from evil spirits. For if joy succeed fear, we should know that the help is from the Lord: because security of soul is a sign of present majesty. But if the fear with which we are stricken persevere, it is an enemy that we see."
Moreover it was becoming to virginal modesty that the Virgin should be troubled. Because, as Ambrose says on Luke 1:20: "It is the part of a virgin to be timid, to fear the advances of men, and to shrink from men's addresses."
But others say that as the Blessed Virgin was accustomed to angelic visions, she was not troubled at seeing this angel, but with wonder at hearing what the angel said to her, for she did not think so highly of herself. Wherefore the evangelist does not say that she was troubled at seeing the angel, but "at his saying." _______________________
FOURTH ARTICLE [III, Q. 30, Art. 4]
Whether the Annunciation Took Place in Becoming Order?
Objection 1: It would seem that the Annunciation did not take place in becoming order. For the dignity of the Mother of God results from the child she conceived. But the cause should be made known before the effect. Therefore the angel should have announced to the Virgin the conception of her child before acknowledging her dignity in greeting her.
Obj. 2: Further, proof should be omitted in things which admit of no doubt; and premised where doubt is possible. But the angel seems first to have announced what the virgin might doubt, and which, because of her doubt, would make her ask: "How shall this be done?" and afterwards to have given the proof, alleging both the instance of Elizabeth and the omnipotence of God. Therefore the Annunciation was made by the angel in unbecoming order.
Obj. 3: Further, the greater cannot be adequately proved by the less. But it was a greater wonder for a virgin than for an old woman to be with child. Therefore the angel's proof was insufficient to demonstrate the conception of a virgin from that of an old woman.
On the contrary, it is written (Rom. 13:1): "Those that are of God, are well ordered [Vulg.: 'Those that are, are ordained of God']." Now the angel was "sent by God" to announce unto the Virgin, as is related Luke 1:26. Therefore the Annunciation was made by the angel in the most perfect order.
I answer that, The Annunciation was made by the angel in a becoming manner. For the angel had a threefold purpose in regard to the Virgin. First, to draw her attention to the consideration of a matter of such moment. This he did by greeting her by a new and unwonted salutation. Wherefore Origen says, commenting on Luke (Hom. vi), that if "she had known that similar words had been addressed to anyone else, she, who had knowledge of the Law, would never have been astonished at the seeming strangeness of the salutation." In which salutation he began by asserting her worthiness of the conception, by saying, "Full of grace"; then he announced the conception in the words, "The Lord is with thee"; and then foretold the honor which would result to her therefrom, by saying, "Blessed art thou among women."