Therefore it seems better to say that by the sanctification in the womb, the Virgin was not freed from the fomes in its essence, but that it remained fettered: not indeed by an act of her reason, as in holy men, since she had not the use of reason from the very first moment of her existence in her mother's womb, for this was the singular privilege of Christ: but by reason of the abundant grace bestowed on her in her sanctification, and still more perfectly by Divine Providence preserving her sensitive soul, in a singular manner, from any inordinate movement. Afterwards, however, at the conception of Christ's flesh, in which for the first time immunity from sin was to be conspicuous, it is to be believed that entire freedom from the fomes redounded from the Child to the Mother. This indeed is signified (Ezech. 43:2): "Behold the glory of the God of Israel came in by the way of the east," i.e. by the Blessed Virgin, "and the earth," i.e. her flesh, "shone with His," i.e. Christ's, "majesty."
Reply Obj. 1: Death and such like penalties do not of themselves incline us to sin. Wherefore though Christ assumed them, He did not assume the fomes. Consequently in order that the Blessed Virgin might be conformed to her Son, from "whose fulness" her grace was derived, the fomes was at first fettered and afterwards taken away: while she was not freed from death and other such penalties.
Reply Obj. 2: The "infirmity" of the flesh, that pertains to the fomes, is indeed to holy men an occasional cause of perfect virtue: but not the "sine qua non" of perfection: and it is quite enough to ascribe to the Blessed Virgin perfect virtue and abundant grace: nor is there any need to attribute to her every occasional cause of perfection.
Reply Obj. 3: The Holy Ghost effected a twofold purification in the Blessed Virgin. The first was, as it were, preparatory to Christ's conception: which did not cleanse her from the stain of sin or fomes, but rather gave her mind a unity of purpose and disengaged it from a multiplicity of things (Cf. Dionysius, Div. Nom. iv), since even the angels are said to be purified, in whom there is no stain, as Dionysius says (Eccl. Hier. vi). The second purification effected in her by the Holy Ghost was by means of the conception of Christ which was the operation of the Holy Ghost. And in respect of this, it may be said that He purified her entirely from the fomes. _______________________
FOURTH ARTICLE [III, Q. 27, Art. 4]
Whether by Being Sanctified in the Womb the Blessed Virgin Was
Preserved from All Actual Sin?
Objection 1: It would seem that by being sanctified in the womb the Blessed Virgin was not preserved from all actual sin. For, as we have already stated (A. 3), after her first sanctification the fomes remained in the Virgin. Now the motion of the fomes, even if it precede the act of the reason, is a venial sin, albeit extremely slight, as Augustine says in his work De Trinitate [*Cf. Sent. ii, D, 24]. Therefore there was some venial sin in the Blessed Virgin.
Obj. 2: Further, Augustine (Qq. Nov. et Vet. Test. lxxiii on Luke 2:35: "Thy own soul a sword shall pierce") says that the Blessed Virgin "was troubled with wondering doubt at the death of our Lord." But doubt in matters of faith is a sin. Therefore the Blessed Virgin was not preserved from all actual sin.
Obj. 3: Further, Chrysostom (Hom. xlv in Matth.) expounding the text: "Behold thy mother and thy brethren stand without, seeking thee," says: "It is clear that they did this from mere vain glory." Again, on John 2:3: "They have no wine," the same Chrysostom says that "she wished to do them a favor, and raise herself in their esteem, by means of her Son: and perchance she succumbed to human frailty, just as did His brethren when they said: 'Manifest Thyself to the world.'" And a little further on he says: "For as yet she did not believe in Him as she ought." Now it is quite clear that all this was sinful. Therefore the Blessed Virgin was not preserved from all sin.
On the contrary, Augustine says (De Nat. et Grat. xxxvi): "In the matter of sin, it is my wish to exclude absolutely all questions concerning the holy Virgin Mary, on account of the honor due to Christ. For since she conceived and brought forth Him who most certainly was guilty of no sin, we know that an abundance of grace was given her that she might be in every way the conqueror of sin."