Whether any merits preceded the union of the Incarnation?

Objections

Objection 1 : It would seem that the union of the Incarnation followed upon certain merits, because upon Ps. 32:22, "Let Thy mercy, o Lord, be upon us, as," etc. a gloss says: "Here the prophet's desire for the Incarnation and its merited fulfilment are hinted at." Therefore the Incarnation falls under merit.
Objection 2 : Further, whoever merits anything merits that without which it cannot be. But the ancient Fathers merited eternal life, to which they were able to attain only by the Incarnation; for Gregory says (Moral. xiii): "Those who came into this world before Christ's coming, whatsoever eminency of righteousness they may have had, could not, on being divested of the body, at once be admitted into the bosom of the heavenly country, seeing that He had not as yet come Who, by His own descending, should place the souls of the righteous in their everlasting seat." Therefore it would seem that they merited the Incarnation.
Objection 3 : Further, of the Blessed Virgin it is sung that "she merited to bear the Lord of all" [*Little Office of B. V. M., Dominican Rite, Ant. at Benedictus], and this took place through the Incarnation. Therefore the Incarnation falls under merit.