Reply Obj. 2: Christ's Passion was the offering of a sacrifice, inasmuch as He endured death of His own free-will out of charity: but in so far as He suffered from His persecutors it was not a sacrifice, but a most grievous sin.
Reply Obj. 3: As Augustine says (Tract. cxiv in Joan.): "The Jews said that 'it is not lawful for us to put any man to death,' because they understood that it was not lawful for them to put any man to death" owing to the sacredness of the feast-day, which they had already begun to celebrate. or, as Chrysostom observes (Hom. lxxxiii in Joan.), because they wanted Him to be slain, not as a transgressor of the Law, but as a public enemy, since He had made Himself out to be a king, of which it was not their place to judge. Or, again, because it was not lawful for them to crucify Him (as they wanted to), but to stone Him, as they did to Stephen. Better still is it to say that the power of putting to death was taken from them by the Romans, whose subjects they were. _______________________
FIFTH ARTICLE [III, Q. 47, Art. 5]
Whether Christ's Persecutors Knew Who He Was?
Objection 1: It would seem that Christ's persecutors did know who He was. For it is written (Matt. 21:38) that the husbandmen seeing the son said within themselves: "This is the heir; come, let us kill him." On this Jerome remarks: "Our Lord proves most manifestly by these words that the rulers of the Jews crucified the Son of God, not from ignorance, but out of envy: for they understood that it was He to whom the Father says by the Prophet: 'Ask of Me, and I will give Thee the Gentiles for Thy inheritance.'" It seems, therefore, that they knew Him to be Christ or the Son of God.
Obj. 2: Further, our Lord says (John 15:24): "But now they have both seen and hated both Me and My Father." Now what is seen is known manifestly. Therefore the Jews, knowing Christ, inflicted the Passion on Him out of hatred.
Obj. 3: Further, it is said in a sermon delivered in the Council of Ephesus (P. iii, cap. x): "Just as he who tears up the imperial message is doomed to die, as despising the prince's word; so the Jew, who crucified Him whom he had seen, will pay the penalty for daring to lay his hands on God the Word Himself." Now this would not be so had they not known Him to be the Son of God, because their ignorance would have excused them. Therefore it seems that the Jews in crucifying Christ knew Him to be the Son of God.
On the contrary, It is written (1 Cor. 2:8): "If they had known it, they would never have crucified the Lord of glory." And (Acts 3:17), Peter, addressing the Jews, says: "I know that you did it through ignorance, as did also your rulers." Likewise the Lord hanging upon the cross said: "Father, forgive them, for they know not what they do" (Luke 23:34).
I answer that, Among the Jews some were elders, and others of lesser degree. Now according to the author of De Qq. Nov. et Vet. Test., qu. lxvi, the elders, who were called "rulers, knew," as did also the devils, "that He was the Christ promised in the Law: for they saw all the signs in Him which the prophets said would come to pass: but they did not know the mystery of His Godhead." Consequently the Apostle says: "If they had known it, they would never have crucified the Lord of glory." It must, however, be understood that their ignorance did not excuse them from crime, because it was, as it were, affected ignorance. For they saw manifest signs of His Godhead; yet they perverted them out of hatred and envy of Christ; neither would they believe His words, whereby He avowed that He was the Son of God. Hence He Himself says of them (John 15:22): "If I had not come, and spoken to them, they would not have sin; but now they have no excuse for their sin." And afterwards He adds (John 15:24): "If I had not done among them the works that no other man hath done, they would not have sin." And so the expression employed by Job (21:14) can be accepted on their behalf: "(Who) said to God: depart from us, we desire not the knowledge of Thy ways."
But those of lesser degree—namely, the common folk—who had not grasped the mysteries of the Scriptures, did not fully comprehend that He was the Christ or the Son of God. For although some of them believed in Him, yet the multitude did not; and if they doubted sometimes whether He was the Christ, on account of the manifold signs and force of His teaching, as is stated John 7:31, 41, nevertheless they were deceived afterwards by their rulers, so that they did not believe Him to be the Son of God or the Christ. Hence Peter said to them: "I know that you did it through ignorance, as did also your rulers"—namely, because they were seduced by the rulers.