TENTH ARTICLE: WHETHER THE UNION OF THE TWO NATURES IN CHRIST TOOK PLACE BY GRACE

State of the question. The difficulties at the beginning of this article show clearly the purpose of this question. It seems that the union did not take place by grace, because grace is an accident inhering in the soul of everyone in the state of grace; whereas the hypostatic union is substantial, as stated above, and belongs exclusively to Christ.

Reply. This union did not take place by created grace, which is an accident, and an habitual gift inhering in the soul, but it took place by uncreated grace, which is the gratuitous will of God doing something without any preceding merits on the part of the beneficiary of the gift.

First part. It is evident, because this union is substantial, and not accidental.

Second part. It is also evident, because this union infinitely transcends the faculty and exigencies of created nature, even the angelic.[624]

In this article St. Thomas does not speak of a substantial mode that would be present between the Word that assumes and the humanity that is assumed.