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.
Reply to Objection 1: Those words are spoken by the husbandmen of the vineyard; and these signify the rulers of the people, who knew Him to be the heir, inasmuch as they knew Him to be the Christ promised in the Law, but the words of Ps. 2:8 seem to militate against this answer: "Ask of Me, and I will give Thee the Gentiles for Thy inheritance"; which are addressed to Him of whom it is said: "Thou art My Son, this day have I begotten Thee." If, then, they knew Him to be the one to whom the words were addressed: "Ask of Me, and I will give Thee the Gentiles for Thy inheritance," it follows that they knew Him to be the Son of God. Chrysostom, too, says upon the same passage that "they knew Him to be the Son of God." Bede likewise, commenting on the words, "For they know not what they do" ( Lk. 23:34 ), says: "It is to be observed that He does not pray for them who, understanding Him to be the Son of God, preferred to crucify Him rather than acknowledge Him." But to this it may be replied that they knew Him to be the Son of God, not from His Nature, but from the excellence of His singular grace.
Yet we may hold that they are said to have known also that He was verily the Son of God, in that they had evident signs thereof: yet out of hatred and envy, they refused credence to these signs, by which they might have known that He was the Son of God.
Reply to Objection 2: The words quoted are preceded by the following: "If I had not done among them the works that no other man hath done, they would not have sin"; and then follow the words: "But now they have both seen and hated both Me and My Father." Now all this shows that while they beheld Christ's marvelous works, it was owing to their hatred that they did not know Him to be the Son of God.
Reply to Objection 3: Affected ignorance does not excuse from guilt, but seems, rather, to aggravate it: for it shows that a man is so strongly attached to sin that he wishes to incur ignorance lest he avoid sinning. The Jews therefore sinned, as crucifiers not only of the Man-Christ, but also as of God.
Whether the sin of those who crucified Christ was most grievous?
Objection 1: It would seem that the sin of Christ's crucifiers was not the most grievous. Because the sin which has some excuse cannot be most grievous. But our Lord Himself excused the sin of His crucifiers when He said: "Father, forgive them: for they know not what they do" ( Lk. 23:34 ). Therefore theirs was not the most grievous sin.
Objection 2: Further, our Lord said to Pilate ( Jn. 19:11 ): "He that hath delivered Me to thee hath the greater sin." But it was Pilate who caused Christ to be crucified by his minions. Therefore the sin of Judas the traitor seems to be greater than that of those who crucified Him.
Objection 3: Further, according to the Philosopher (Ethic. v): "No one suffers injustice willingly"; and in the same place he adds: "Where no one suffers injustice, nobody works injustice." Consequently nobody wreaks injustice upon a willing subject. But Christ suffered willingly, as was shown above (AA[1],2). Therefore those who crucified Christ did Him no injustice; and hence their sin was not the most grievous.
On the contrary, Chrysostom, commenting on the words, "Fill ye up, then, the measure of your fathers" ( Mat. 23:32 ), says: "In very truth they exceeded the measure of their fathers; for these latter slew men, but they crucified God."
I answer that, As stated above (A[5]), the rulers of the Jews knew that He was the Christ: and if there was any ignorance in them, it was affected ignorance, which could not excuse them. Therefore their sin was the most grievous, both on account of the kind of sin, as well as from the malice of their will. The Jews also of the common order sinned most grievously as to the kind of their sin: yet in one respect their crime was lessened by reason of their ignorance. Hence Bede, commenting on Lk. 23:34 , "Father, forgive them, for they know not what they do," says: "He prays for them who know not what they are doing, as having the zeal of God, but not according to knowledge." But the sin of the Gentiles, by whose hands He was crucified, was much more excusable, since they had no knowledge of the Law.
Reply to Objection 1: As stated above, the excuse made by our Lord is not to be referred to the rulers among the Jews, but to the common people.
Reply to Objection 2: Judas did not deliver up Christ to Pilate, but to the chief priests who gave Him up to Pilate, according to Jn. 18:35 : "Thy own nation and the chief priests have delivered Thee up to me." But the sin of all these was greater than that of Pilate, who slew Christ from fear of Caesar; and even greater than the sin of the soldiers who crucified Him at the governor's bidding, not out of cupidity like Judas, nor from envy and hate like the chief priests.
Reply to Objection 3: Christ, indeed willed His Passion just as the Father willed it; yet He did not will the unjust action of the Jews. Consequently Christ's slayers are not excused of their injustice. Nevertheless, whoever slays a man not only does a wrong to the one slain, but likewise to God and to the State; just as he who kills himself, as the Philosopher says (Ethic. v). Hence it was that David condemned to death the man who "did not fear to lay hands upon the Lord's anointed," even though he (Saul) had requested it, as related 2 Kings 1:5-14.