Thomas Aquinas - Summa Theologica, Part III (Tertia Pars)

Reply Obj. 3: In His temptation and passion Christ has succored us by satisfying for us. Now sin does not further satisfaction, but hinders it, as has been said. Hence, it behooved Him not to have sin, but to be wholly free from sin; otherwise the punishment He bore would have been due to Him for His own sin.

Reply Obj. 4: God "made Christ sin"—not, indeed, in such sort that He had sin, but that He made Him a sacrifice for sin: even as it is written (Osee 4:8): "They shall eat the sins of My people"—they, i.e. the priests, who by the law ate the sacrifices offered for sin. And in that way it is written (Isa. 53:6) that "the Lord hath laid on Him the iniquity of us all" (i.e. He gave Him up to be a victim for the sins of all men); or "He made Him sin" (i.e. made Him to have "the likeness of sinful flesh"), as is written (Rom. 8:3), and this on account of the passible and mortal body He assumed.

Reply Obj. 5: A penitent can give a praiseworthy example, not by having sinned, but by freely bearing the punishment of sin. And hence Christ set the highest example to penitents, since He willingly bore the punishment, not of His own sin, but of the sins of others. _______________________

SECOND ARTICLE [III, Q. 15, Art. 2]

Whether There Was the Fomes of Sin in Christ?

Objection 1: It would seem that in Christ there was the fomes of sin. For the fomes of sin, and the passibility and mortality of the body spring from the same principle, to wit, from the withdrawal of original justice, whereby the inferior powers of the soul were subject to the reason, and the body to the soul. Now passibility and mortality of body were in Christ. Therefore there was also the fomes of sin.

Obj. 2: Further, as Damascene says (De Fide Orth. iii, 19), "it was by consent of the Divine will that the flesh of Christ was allowed to suffer and do what belonged to it." But it is proper to the flesh to lust after its pleasures. Now since the fomes of sin is nothing more than concupiscence, as the gloss says on Rom. 7:8, it seems that in Christ there was the fomes of sin.

Obj. 3: Further, it is by reason of the fomes of sin that "the flesh lusteth against the spirit," as is written (Gal. 5:17). But the spirit is shown to be so much the stronger and worthier to be crowned according as the more completely it overcomes its enemy—to wit, the concupiscence of the flesh, according to 2 Tim. 2:5, he "is not crowned except he strive lawfully." Now Christ had a most valiant and conquering spirit, and one most worthy of a crown, according to Apoc. 6:2: "There was a crown given Him, and He went forth conquering that He might conquer." Therefore it would especially seem that the fomes of sin ought to have been in Christ.

On the contrary, It is written (Matt. 1:20): "That which is conceived in her is of the Holy Ghost." Now the Holy Ghost drives out sin and the inclination to sin, which is implied in the word fomes. Therefore in Christ there ought not to have been the fomes of sin.

I answer that, As was said above (Q. 7, AA. 2, 9), Christ had grace and all the virtues most perfectly. Now moral virtues, which are in the irrational part of the soul, make it subject to reason, and so much the more as the virtue is more perfect; thus, temperance controls the concupiscible appetite, fortitude and meekness the irascible appetite, as was said in the Second Part (I-II, Q. 56, A. 4). But there belongs to the very nature of the fomes of sin an inclination of the sensual appetite to what is contrary to reason. And hence it is plain that the more perfect the virtues are in any man, the weaker the fomes of sin becomes in him. Hence, since in Christ the virtues were in their highest degree, the fomes of sin was nowise in Him; inasmuch, also, as this defect cannot be ordained to satisfaction, but rather inclined to what is contrary to satisfaction.

Reply Obj. 1: The inferior powers pertaining to the sensitive appetite have a natural capacity to be obedient to reason; but not the bodily powers, nor those of the bodily humors, nor those of the vegetative soul, as is made plain Ethic. i, 13. And hence perfection of virtue, which is in accordance with right reason, does not exclude passibility of body; yet it excludes the fomes of sin, the nature of which consists in the resistance of the sensitive appetite to reason.

Reply Obj. 2: The flesh naturally seeks what is pleasing to it by the concupiscence of the sensitive appetite; but the flesh of man, who is a rational animal, seeks this after the manner and order of reason. And thus with the concupiscence of the sensitive appetite Christ's flesh naturally sought food, drink, and sleep, and all else that is sought in right reason, as is plain from Damascene (De Fide Orth. iii, 14). Yet it does not therefore follow that in Christ there was the fomes of sin, for this implies the lust after pleasurable things against the order of reason.

Reply Obj. 3: The spirit gives evidence of fortitude to some extent by resisting that concupiscence of the flesh which is opposed to it; yet a greater fortitude of spirit is shown, if by its strength the flesh is thoroughly overcome, so as to be incapable of lusting against the spirit. And hence this belonged to Christ, whose spirit reached the highest degree of fortitude. And although He suffered no internal assault on the part of the fomes of sin, He sustained an external assault on the part of the world and the devil, and won the crown of victory by overcoming them. _______________________

THIRD ARTICLE [III, Q. 15, Art. 3]

Whether in Christ There Was Ignorance?

Objection 1: It would seem that there was ignorance in Christ. For that is truly in Christ which belongs to Him in His human nature, although it does not belong to Him in His Divine Nature, as suffering and death. But ignorance belongs to Christ in His human nature; for Damascene says (De Fide Orth. iii, 21) that "He assumed an ignorant and enslaved nature." Therefore ignorance was truly in Christ.

Obj. 2: Further, one is said to be ignorant through defect of knowledge. Now some kind of knowledge was wanting to Christ, for the Apostle says (2 Cor. 5:21) "Him that knew no sin, for us He hath made sin." Therefore there was ignorance in Christ.

Obj. 3: Further, it is written (Isa. 8:4): "For before the child know to call his Father and his mother, the strength of Damascus . . . shall be taken away." Therefore in Christ there was ignorance of certain things.

On the contrary, Ignorance is not taken away by ignorance. But Christ came to take away our ignorance; for "He came to enlighten them that sit in darkness and in the shadow of death" (Luke 1:79). Therefore there was no ignorance in Christ.

I answer that, As there was the fulness of grace and virtue in Christ, so too there was the fulness of all knowledge, as is plain from what has been said above (Q. 7, A. 9; Q. 9). Now as the fulness of grace and virtue in Christ excluded the fomes of sin, so the fulness of knowledge excluded ignorance, which is opposed to knowledge. Hence, even as the fomes of sin was not in Christ, neither was there ignorance in Him.

Reply Obj. 1: The nature assumed by Christ may be viewed in two ways. First, in its specific nature, and thus Damascene calls it "ignorant and enslaved"; hence he adds: "For man's nature is a slave of Him" (i.e. God) "Who made it; and it has no knowledge of future things." Secondly, it may be considered with regard to what it has from its union with the Divine hypostasis, from which it has the fulness of knowledge and grace, according to John 1:14: "We saw Him [Vulg.: 'His glory'] as it were the Only-begotten of the Father, full of grace and truth"; and in this way the human nature in Christ was not affected with ignorance.