Whether Christ's Passion brought about our salvation by way of redemption?
Objection 1: It would seem that Christ's Passion did not effect our salvation by way of redemption. For no one purchases or redeems what never ceased to belong to him. But men never ceased to belong to God according to Ps. 23:1: "The earth is the Lord's and the fulness thereof: the world and all they that dwell therein." Therefore it seems that Christ did not redeem us by His Passion.
Objection 2: Further, as Augustine says (De Trin. xiii): "The devil had to be overthrown by Christ's justice." But justice requires that the man who has treacherously seized another's property shall be deprived of it, because deceit and cunning should not benefit anyone, as even human laws declare. Consequently, since the devil by treachery deceived and subjugated to himself man, who is God's creature, it seems that man ought not to be rescued from his power by way of redemption.
Objection 3: Further, whoever buys or redeems an object pays the price to the holder. But it was not to the devil, who held us in bondage, that Christ paid His blood as the price of our redemption. Therefore Christ did not redeem us by His Passion.
On the contrary, It is written (1 Pet. 1:18): "You were not redeemed with corruptible things as gold or silver from your vain conversation of the tradition of your fathers: but with the precious blood of Christ, as of a lamb unspotted and undefiled." And (Gal. 3:13): "Christ hath redeemed us from the curse of the law, being made a curse for us." Now He is said to be a curse for us inasmuch as He suffered upon the tree, as stated above (Q 46, A 4). Therefore He did redeem us by His Passion.
I answer that, Man was held captive on account of sin in two ways: first of all, by the bondage of sin, because (Jn. 8:34): "Whosoever committeth sin is the servant of sin"; and (2 Pet. 2:19): "By whom a man is overcome, of the same also he is the slave." Since, then, the devil had overcome man by inducing him to sin, man was subject to the devil's bondage. Secondly, as to the debt of punishment, to the payment of which man was held fast by God's justice: and this, too, is a kind of bondage, since it savors of bondage for a man to suffer what he does not wish, just as it is the free man's condition to apply himself to what he wills.
Since, then, Christ's Passion was a sufficient and a superabundant atonement for the sin and the debt of the human race, it was as a price at the cost of which we were freed from both obligations. For the atonement by which one satisfies for self or another is called the price, by which he ransoms himself or someone else from sin and its penalty, according to Dan. 4:24: "Redeem thou thy sins with alms." Now Christ made satisfaction, not by giving money or anything of the sort, but by bestowing what was of greatest price---Himself---for us. And therefore Christ's Passion is called our redemption.
Reply to Objection 1: Man is said to belong to God in two ways. First of all, in so far as he comes under God's power: in which way he never ceased to belong to God; according to Dan. 4:22: "The Most High ruleth over the kingdom of men, and giveth it to whomsoever he will." Secondly, by being united to Him in charity, according to Rom. 8:9: "If any man have not the Spirit of Christ, he is none of His." In the first way, then, man never ceased to belong to God, but in the second way he did cease because of sin. And therefore in so far as he was delivered from sin by the satisfaction of Christ's Passion, he is said to be redeemed by the Passion of Christ.
Reply to Objection 2: Man by sinning became the bondsman both of God and of the devil. Through guilt he had offended God, and put himself under the devil by consenting to him; consequently he did not become God's servant on account of his guilt, but rather, by withdrawing from God's service, he, by God's just permission, fell under the devil's servitude on account of the offense perpetrated. But as to the penalty, man was chiefly bound to God as his sovereign judge, and to the devil as his torturer, according to Mat. 5:25: "Lest perhaps the adversary deliver thee to the judge, and the judge deliver thee to the officer"---that is, "to the relentless avenging angel," as Chrysostom says (Hom. xi). Consequently, although, after deceiving man, the devil, so far as in him lay, held him unjustly in bondage as to both sin and penalty, still it was just that man should suffer it. God so permitting it as to the sin and ordaining it as to the penalty. And therefore justice required man's redemption with regard to God, but not with regard to the devil.
Reply to Objection 3: Because, with regard to God, redemption was necessary for man's deliverance, but not with regard to the devil, the price had to be paid not to the devil, but to God. And therefore Christ is said to have paid the price of our redemption---His own precious blood---not to the devil, but to God.
III · Q. 48, Art. 5: Whether it is proper to Christ to be the Redeemer?
Whether it is proper to Christ to be the Redeemer?
Objection 1: It would seem that it is not proper to Christ to be the Redeemer, because it is written (Ps. 30:6): "Thou hast redeemed me, O Lord, the God of Truth." But to be the Lord God of Truth belongs to the entire Trinity. Therefore it is not proper to Christ.
Objection 2: Further, he is said to redeem who pays the price of redemption. But God the Father gave His Son in redemption for our sins, as is written (Ps. 110:9): "The Lord hath sent redemption to His people," upon which the gloss adds, "that is, Christ, who gives redemption to captives." Therefore not only Christ, but the Father also, redeemed us.
Objection 3: Further, not only Christ's Passion, but also that of other saints conduced to our salvation, according to Col. 1:24: "I now rejoice in my sufferings for you, and fill up those things that are wanting of the sufferings of Christ, in my flesh for His body, which is the Church." Therefore the title of Redeemer belongs not only to Christ, but also to the other saints.
On the contrary, It is written (Gal. 3:13): "Christ redeemed us from the curse of the Law, being made a curse for us." But only Christ was made a curse for us. Therefore only Christ ought to be called our Redeemer.
I answer that, For someone to redeem, two things are required---namely, the act of paying and the price paid. For if in redeeming something a man pays a price which is not his own, but another's, he is not said to be the chief redeemer, but rather the other is, whose price it is. Now Christ's blood or His bodily life, which "is in the blood," is the price of our redemption (Lev. 17:11, 14), and that life He paid. Hence both of these belong immediately to Christ as man; but to the Trinity as to the first and remote cause, to whom Christ's life belonged as to its first author, and from whom Christ received the inspiration of suffering for us. Consequently it is proper to Christ as man to be the Redeemer immediately; although the redemption may be ascribed to the whole Trinity as its first cause.
Reply to Objection 1: A gloss explains the text thus: "Thou, O Lord God of Truth, hast redeemed me in Christ, crying out, 'Lord, into Thy hands I commend my spirit.'" And so redemption belongs immediately to the Man-Christ, but principally to God.
Reply to Objection 2: The Man-Christ paid the price of our redemption immediately, but at the command of the Father as the original author.
Reply to Objection 3: The sufferings of the saints are beneficial to the Church, as by way, not of redemption, but of example and exhortation, according to 2 Cor. 1:6: "Whether we be in tribulation, it is for your exhortation and salvation."