Reply to Objection 2: This is plain from what has been said.
Reply to Objection 3: Nothing was more powerful than Christ's soul, absolutely; yet there was nothing to hinder a thing being more powerful in regard to this or that effect, as a nail for piercing. And this I say, in so far as Christ's soul is considered in its own proper nature and power.
Whether Christ contracted these defects?
Objection 1: It would seem that Christ contracted bodily defects. For we are said to contract what we derive with our nature from birth. But Christ, together with human nature, derived His bodily defects and infirmities through His birth from His mother, whose flesh was subject to these defects. Therefore it seems that He contracted these defects.
Objection 2: Further, what is caused by the principles of nature is derived together with nature, and hence is contracted. Now these penalties are caused by the principles of human nature. Therefore Christ contracted them.
Objection 3: Further, Christ is likened to other men in these defects, as is written Heb. 2:17. But other men contract these defects. Therefore it seems that Christ contracted these defects.
On the contrary, These defects are contracted through sin, according to Rom. 5:12 : "By one man sin entered into this world and by sin, death." Now sin had no place in Christ. Therefore Christ did not contract these defects.
I answer that, In the verb "to contract" is understood the relation of effect to cause, i.e. that is said to be contracted which is derived of necessity together with its cause. Now the cause of death and such like defects in human nature is sin, since "by sin death entered into this world," according to Rom. 5:12. And hence they who incur these defects, as due to sin, are properly said to contract them. Now Christ had not these defects, as due to sin, since, as Augustine [*Alcuin in the Gloss, Ord.], expounding Jn. 3:31, "He that cometh from above, is above all," says: "Christ came from above, i.e. from the height of human nature, which it had before the fall of the first man." For He received human nature without sin, in the purity which it had in the state of innocence. In the same way He might have assumed human nature without defects. Thus it is clear that Christ did not contract these defects as if taking them upon Himself as due to sin, but by His own will.
Reply to Objection 1: The flesh of the Virgin was conceived in original sin, [*See introductory note to Q[27]] and therefore contracted these defects. But from the Virgin, Christ's flesh assumed the nature without sin, and He might likewise have assumed the nature without its penalties. But He wished to bear its penalties in order to carry out the work of our redemption, as stated above (A[1]). Therefore He had these defects---not that He contracted them, but that He assumed them.
Reply to Objection 2: The cause of death and other corporeal defects of human nature is twofold: the first is remote, and results from the material principles of the human body, inasmuch as it is made up of contraries. But this cause was held in check by original justice. Hence the proximate cause of death and other defects is sin, whereby original justice is withdrawn. And thus, because Christ was without sin, He is said not to have contracted these defects, but to have assumed them.
Reply to Objection 3: Christ was made like to other men in the quality and not in the cause of these defects; and hence, unlike others, He did not contract them.
Whether Christ ought to have assumed all the bodily defects of men?
Objection 1: It would seem that Christ ought to have assumed all the bodily defects of men. For Damascene says (De Fide Orth. iii, 6,18): "What is unassumable is incurable." But Christ came to cure all our defects. Therefore He ought to have assumed all our defects.
Objection 2: Further it was said (A[1]), that in order to satisfy for us, Christ ought to have had perfective habits of soul and defects of body. Now as regards the soul, He assumed the fulness of all grace. Therefore as regards the body, He ought to have assumed all defects.
Objection 3: Further, amongst all bodily defects death holds the chief place. Now Christ assumed death. Much more, therefore, ought He to have assumed other defects.
On the contrary, Contraries cannot take place simultaneously in the same. Now some infirmities are contrary to each other, being caused by contrary principles. Hence it could not be that Christ assumed all human infirmities.
I answer that, As stated above (AA[1],2), Christ assumed human defects in order to satisfy for the sin of human nature, and for this it was necessary for Him to have the fulness of knowledge and grace in His soul. Hence Christ ought to have assumed those defects which flow from the common sin of the whole nature, yet are not incompatible with the perfection of knowledge and grace. And thus it was not fitting for Him to assume all human defects or infirmities. For there are some defects that are incompatible with the perfection of knowledge and grace, as ignorance, a proneness towards evil, and a difficulty in well-doing. Some other defects do not flow from the whole of human nature in common on account of the sin of our first parent, but are caused in some men by certain particular causes, as leprosy, epilepsy, and the like; and these defects are sometimes brought about by the fault of the man, e.g. from inordinate eating; sometimes by a defect in the formative power. Now neither of these pertains to Christ, since His flesh was conceived of the Holy Ghost, Who has infinite wisdom and power, and cannot err or fail; and He Himself did nothing wrong in the order of His life. But there are some third defects, to be found amongst all men in common, by reason of the sin of our first parent, as death, hunger, thirst, and the like; and all these defects Christ assumed, which Damascene (De Fide Orth. i, 11; iii, 20) calls "natural and indetractible passions" ---natural, as following all human nature in common; indetractible, as implying no defect of knowledge or grace.
Reply to Objection 1: All particular defects of men are caused by the corruptibility and passibility of the body, some particular causes being added; and hence, since Christ healed the passibility and corruptibility of our body by assuming it, He consequently healed all other defects.
Reply to Objection 2: The fulness of all grace and knowledge was due to Christ's soul of itself, from the fact of its being assumed by the Word of God; and hence Christ assumed all the fulness of knowledge and wisdom absolutely. But He assumed our defects economically, in order to satisfy for our sin, and not that they belonged to Him of Himself. Hence it was not necessary for Him to assume them all, but only such as sufficed to satisfy for the sin of the whole nature.
Reply to Objection 3: Death comes to all men from the sin of our first parent; but not other defects, although they are less than death. Hence there is no parity.