Reply Obj. 2: Although obedience implies necessity with regard to the thing commanded, nevertheless it implies free-will with regard to the fulfilling of the precept. And, indeed, such was Christ's obedience, for, although His Passion and death, considered in themselves, were repugnant to the natural will, yet Christ resolved to fulfill God's will with respect to the same, according to Ps. 39:9: "That I should do Thy will: O my God, I have desired it." Hence He said (Matt. 26:42): "If this chalice may not pass away, but I must drink it, Thy will be done."
Reply Obj. 3: For the same reason Christ suffered out of charity and out of obedience; because He fulfilled even the precepts of charity out of obedience only; and was obedient, out of love, to the Father's command. _______________________
THIRD ARTICLE [III, Q. 47, Art. 3]
Whether God the Father Delivered Up Christ to the Passion?
Objection 1: It would seem that God the Father did not deliver up Christ to the Passion. For it is a wicked and cruel act to hand over an innocent man to torment and death. But, as it is written (Deut. 32:4): "God is faithful, and without any iniquity." Therefore He did not hand over the innocent Christ to His Passion and death.
Obj. 2: Further, it is not likely that a man be given over to death by himself and by another also. But Christ gave Himself up for us, as it is written (Isa. 53:12): "He hath delivered His soul unto death." Consequently it does not appear that God the Father delivered Him up.
Obj. 3: Further, Judas is held to be guilty because he betrayed Christ to the Jews, according to John 6:71: "One of you is a devil," alluding to Judas, who was to betray Him. The Jews are likewise reviled for delivering Him up to Pilate; as we read in John 18:35: "Thy own nation, and the chief priests have delivered Thee up to me." Moreover, as is related in John 19:16: Pilate "delivered Him to them to be crucified"; and according to 2 Cor. 6:14: there is no "participation of justice with injustice." It seems, therefore, that God the Father did not deliver up Christ to His Passion.
On the contrary, It is written (Rom. 8:32): "God hath not spared His own Son, but delivered Him up for us all."
I answer that, As observed above (A. 2), Christ suffered voluntarily out of obedience to the Father. Hence in three respects God the Father did deliver up Christ to the Passion. In the first way, because by His eternal will He preordained Christ's Passion for the deliverance of the human race, according to the words of Isaias (53:6): "The Lord hath laid on Him the iniquities of us all"; and again (Isa. 53:10): "The Lord was pleased to bruise Him in infirmity." Secondly, inasmuch as, by the infusion of charity, He inspired Him with the will to suffer for us; hence we read in the same passage: "He was offered because it was His own will" (Isa. 53:7). Thirdly, by not shielding Him from the Passion, but abandoning Him to His persecutors: thus we read (Matt. 27:46) that Christ, while hanging upon the cross, cried out: "My God, My God, why hast Thou forsaken Me?" because, to wit, He left Him to the power of His persecutors, as Augustine says (Ep. cxl).
Reply Obj. 1: It is indeed a wicked and cruel act to hand over an innocent man to torment and to death against his will. Yet God the Father did not so deliver up Christ, but inspired Him with the will to suffer for us. God's "severity" (cf. Rom. 11:22) is thereby shown, for He would not remit sin without penalty: and the Apostle indicates this when (Rom. 8:32) he says: "God spared not even His own Son." Likewise His "goodness" (Rom. 11:22) shines forth, since by no penalty endured could man pay Him enough satisfaction: and the Apostle denotes this when he says: "He delivered Him up for us all": and, again (Rom. 3:25): "Whom"—that is to say, Christ—God "hath proposed to be a propitiation through faith in His blood."