Reply to Objection 1: When we say, "Christ, as Man, was predestinated the Son of God," this qualification, "as Man," can be referred in two ways to the action signified by the participle. First, as regards what comes under predestination materially, and thus it is false. For the sense would be that it was predestinated that Christ, as Man, should be the Son of God. And in this sense the objection takes it.
Secondly, it may be referred to the very nature of the action itself: that is, forasmuch as predestination implies antecedence and gratuitous effect. And thus predestination belongs to Christ by reason of His human nature, as stated above. And in this sense He is said to be predestinated as Man.
Reply to Objection 2: Something may be befitting to a man by reason of human nature, in two ways. First, so that human nature be the cause thereof: thus risibility is befitting to Socrates by reason of human nature, being caused by its principles. In this manner predestination is not befitting either to Christ or to any other man, by reason of human nature. This is the sense of the objection. Secondly, a thing may be befitting to someone by reason of human nature, because human nature is susceptible of it. And in this sense we say that Christ was predestinated by reason of human nature; because predestination refers to the exaltation of human nature in Him, as stated above.
Reply to Objection 3: As Augustine says (Praedest. Sanct. xv): "The Word of God assumed Man to Himself in such a singular and ineffable manner that at the same time He may be truly and correctly called the Son of Man, because He assumed Men to Himself; and the Son of God, because it was the Only-begotten of God Who assumed human nature." Consequently, since this assumption comes under predestination by reason of its being gratuitous, we can say both that the Son of God was predestinated to be man, and that the Son of Man was predestinated to be the Son of God. But because grace was not bestowed on the Son of God that He might be man, but rather on human nature, that it might be united to the Son of God; it is more proper to say that "Christ, as Man, was predestinated to be the Son of God," than that, "Christ, as Son of God, was predestinated to be Man."
Whether Christ's predestination is the exemplar of ours?
Objection 1: It would seem that Christ's predestination is not the exemplar of ours. For the exemplar exists before the exemplate. But nothing exists before the eternal. Since, therefore, our predestination is eternal, it seems that Christ's predestination is not the exemplar of ours.
Objection 2: Further, the exemplar leads us to knowledge of the exemplate. But there was no need for God to be led from something else to knowledge of our predestination; since it is written ( Rom. 8:29 ): "Whom He foreknew, He also predestinated." Therefore Christ's predestination is not the exemplar of ours.
Objection 3: Further, the exemplar is conformed to the exemplate. But Christ's predestination seems to be of a different nature from ours: because we are predestinated to the sonship of adoption, whereas Christ was predestinated "Son of God in power," as is written ( Rom. 1:4 ). Therefore His predestination is not the exemplar of ours.
On the contrary, Augustine says (De Praedest. Sanct. xv): "The Saviour Himself, the Mediator of God and men, the Man Christ Jesus is the most splendid light of predestination and grace." Now He is called the light of predestination and grace, inasmuch as our predestination is made manifest by His predestination and grace; and this seems to pertain to the nature of an exemplar. Therefore Christ's predestination is the exemplar of ours.
I answer that, Predestination may be considered in two ways. First, on the part of the act of predestination: and thus Christ's predestination cannot be said to be the exemplar of ours: for in the same way and by the same eternal act God predestinated us and Christ.
Secondly, predestination may be considered on the part of that to which anyone is predestinated, and this is the term and effect of predestination. In this sense Christ's predestination is the exemplar of ours, and this in two ways. First, in respect of the good to which we are predestinated: for He was predestinated to be the natural Son of God, whereas we are predestinated to the adoption of sons, which is a participated likeness of natural sonship. Whence it is written ( Rom. 8:29 ): "Whom He foreknew, He also predestinated to be made conformable to the image of His Son." Secondly, in respect of the manner of obtaining this good---that is, by grace. This is most manifest in Christ; because human nature in Him, without any antecedent merits, was united to the Son of God: and of the fulness of His grace we all have received, as it is written ( Jn. 1:16 ).
Reply to Objection 1: This argument considers the aforesaid act of the predestinator.
The same is to be said of the second objection.
Reply to Objection 3: The exemplate need not be conformed to the exemplar in all respects: it is sufficient that it imitate it in some.
Whether Christ's predestination is the cause of ours?
Objection 1: It would seem that Christ's predestination is not the cause of ours. For that which is eternal has no cause. But our predestination is eternal. Therefore Christ's predestination is not the cause of ours.
Objection 2: Further, that which depends on the simple will of God has no other cause but God's will. Now, our predestination depends on the simple will of God, for it is written ( Eph. 1:11 ): "Being predestinated according to the purpose of Him, Who worketh all things according to the counsel of His will." Therefore Christ's predestination is not the cause of ours.
Objection 3: Further, if the cause be taken away, the effect is also taken away. But if we take away Christ's predestination, ours is not taken away; since even if the Son of God were not incarnate, our salvation might yet have been achieved in a different manner, as Augustine says (De Trin. xiii, 10). Therefore Christ's predestination is. not the cause of ours.
On the contrary, It is written ( Eph. 1:5 ): "(Who) hath predestinated us unto the adoption of children through Jesus Christ."
I answer that, if we consider predestination on the part of the very act of predestinating, then Christ's predestination is not the cause of ours; because by one and the same act God predestinated both Christ and us. But if we consider predestination on the part of its term, thus Christ's predestination is the cause of ours: for God, by predestinating from eternity, so decreed our salvation, that it should be achieved through Jesus Christ. For eternal predestination covers not only that which is to be accomplished in time, but also the mode and order in which it is to be accomplished in time.
Replies OBJ 1 and 2: These arguments consider predestination on the part of the act of predestinating.
Reply to Objection 3: If Christ were not to have been incarnate, God would have decreed men's salvation by other means. But since He decreed the Incarnation of Christ, He decreed at the same time that He should be the cause of our salvation.