Obj. 2: Further, strength of soul mitigates pain, so much so that the Stoics held there was no sadness in the soul of a wise man; and Aristotle (Ethic. ii) holds that moral virtue fixes the mean in the passions. But Christ had most perfect strength of soul. Therefore it seems that the greatest pain did not exist in Christ.
Obj. 3: Further, the more sensitive the sufferer is, the more acute will the pain be. But the soul is more sensitive than the body, since the body feels in virtue of the soul; also, Adam in the state of innocence seems to have had a body more sensitive than Christ had, who assumed a human body with its natural defects. Consequently, it seems that the pain of a sufferer in purgatory, or in hell, or even Adam's pain, if he suffered at all, was greater than Christ's in the Passion.
Obj. 4: Further, the greater the good lost, the greater the pain. But by sinning the sinner loses a greater good than Christ did when suffering; since the life of grace is greater than the life of nature: also, Christ, who lost His life, but was to rise again after three days, seems to have lost less than those who lose their lives and abide in death. Therefore it seems that Christ's pain was not the greatest of all.
Obj. 5: Further, the victim's innocence lessens the sting of his sufferings. But Christ died innocent, according to Jer. 9:19: "I was as a meek lamb, that is carried to be a victim." Therefore it seems that the pain of Christ's Passion was not the greatest.
Obj. 6: Further, there was nothing superfluous in Christ's conduct. But the slightest pain would have sufficed to secure man's salvation, because from His Divine Person it would have had infinite virtue. Therefore it would have been superfluous to choose the greatest of all pains.
On the contrary, It is written (Lam. 1:12) on behalf of Christ's Person: "O all ye that pass by the way attend, and see if there be any sorrow like unto My sorrow."
I answer that, As we have stated, when treating of the defects assumed by Christ (Q. 15, AA. 5, 6), there was true and sensible pain in the suffering Christ, which is caused by something hurtful to the body: also, there was internal pain, which is caused from the apprehension of something hurtful, and this is termed "sadness." And in Christ each of these was the greatest in this present life. This arose from four causes. First of all, from the sources of His pain. For the cause of the sensitive pain was the wounding of His body; and this wounding had its bitterness, both from the extent of the suffering already mentioned (A. 5) and from the kind of suffering, since the death of the crucified is most bitter, because they are pierced in nervous and highly sensitive parts—to wit, the hands and feet; moreover, the weight of the suspended body intensifies the agony, and besides this there is the duration of the suffering because they do not die at once like those slain by the sword. The cause of the interior pain was, first of all, all the sins of the human race, for which He made satisfaction by suffering; hence He ascribes them, so to speak, to Himself, saying (Ps. 21:2): "The words of my sins." Secondly, especially the fall of the Jews and of the others who sinned in His death chiefly of the apostles, who were scandalized at His Passion. Thirdly, the loss of His bodily life, which is naturally horrible to human nature.
The magnitude of His suffering may be considered, secondly, from the susceptibility of the sufferer as to both soul and body. For His body was endowed with a most perfect constitution, since it was fashioned miraculously by the operation of the Holy Ghost; just as some other things made by miracles are better than others, as Chrysostom says (Hom. xxii in Joan.) respecting the wine into which Christ changed the water at the wedding-feast. And, consequently, Christ's sense of touch, the sensitiveness of which is the reason for our feeling pain, was most acute. His soul likewise, from its interior powers, apprehended most vehemently all the causes of sadness.
Thirdly, the magnitude of Christ's suffering can be estimated from the singleness of His pain and sadness. In other sufferers the interior sadness is mitigated, and even the exterior suffering, from some consideration of reason, by some derivation or redundance from the higher powers into the lower; but it was not so with the suffering Christ, because "He permitted each one of His powers to exercise its proper function," as Damascene says (De Fide Orth. iii).
Fourthly, the magnitude of the pain of Christ's suffering can be reckoned by this, that the pain and sorrow were accepted voluntarily, to the end of men's deliverance from sin; and consequently He embraced the amount of pain proportionate to the magnitude of the fruit which resulted therefrom.