SEVENTH ARTICLE: WHETHER ONE DIVINE PERSON CAN ASSUME TWO HUMAN NATURES

State of the question. This question is posited, as the preceding questions are, so as to make it known more clearly in what the mystery of the Incarnation consists on the part of the person assuming.

The difficulty is that there would be one suppositum for two natures of the same species, for example, the same divine person would be Peter and John. Another difficulty is that it could not then be said that the person incarnate is one man, because He would have two human natures; nor several men, because several men have distinct supposita. It is not apparent how these two human natures could be united to each other, one of these natures being perhaps in one part of the world, and the other in another part.

Reply. St. Thomas affirms, however, the possibility of such an assumption.

Indirect proof. It is taken from the counter-argument of this article, and may be expressed by the following syllogism.

Whatever the Father can do externally, the Son also can do. But after the Incarnation, the Father can assume a human nature distinct from that assumed by the Son. Therefore the Son can assume a human nature distinct from the one He assumed.

Direct proof. This same principle is again invoked, as in the following syllogism.

The power of a divine person, both as regards the principle in the assumption and as regards the term of the assumption, is infinite; nor can it be restricted to what has been created. But a divine person would be restricted in power if He could assume only one human nature. Therefore a divine person can assume more than one human nature.

Some have objected that such two human natures would interpenetrate.

Reply. To establish the truth of this conclusion, it is not necessary for the divine person to assume these two natures in the same place; for divine immensity makes it possible for any of the divine persons to assume one of the human natures in Rome, and the other in some place far away from this city. Such action involves no absurdity.[677]

Reply to first objection. "There can be a numerical multitude on the part of the nature, on account of the division of matter, without distinction of supposita."

Reply to second objection. There would still be one man, and not several, because there is only one suppositum. In fact, one divine person could assume many individual human natures, and there would be no pantheism in this for there would be no confusion of the divine nature with the human nature; but all these natures would be impeccable. Toletus gave us a good rule to follow, one that is taken from the teaching of St. Thomas. He says: "For the multiplication of concrete substantive names both kinds of multitude are required, namely, of supposita and of forms; the absence of one results in unity."[678]