The sixth reason is because of the various virtues denoted by this class of death. Hence Augustine in his book on the grace of the Old and New Testament (Ep. cxl) says: "Not without purpose did He choose this class of death, that He might be a teacher of that breadth, and height, and length, and depth," of which the Apostle speaks (Eph. 3:18): "For breadth is in the beam, which is fixed transversely above; this appertains to good works, since the hands are stretched out upon it. Length is the tree's extent from the beam to the ground; and there it is planted—that is, it stands and abides—which is the note of longanimity. Height is in that portion of the tree which remains over from the transverse beam upwards to the top, and this is at the head of the Crucified, because He is the supreme desire of souls of good hope. But that part of the tree which is hidden from view to hold it fixed, and from which the entire rood springs, denotes the depth of gratuitous grace." And, as Augustine says (Tract. cxix in Joan.): "The tree upon which were fixed the members of Him dying was even the chair of the Master teaching."
The seventh reason is because this kind of death responds to very many figures. For, as Augustine says in a sermon on the Passion (Serm. ci De Tempore), an ark of wood preserved the human race from the waters of the Deluge; at the exodus of God's people from Egypt, Moses with a rod divided the sea, overthrew Pharaoh and saved the people of God. the same Moses dipped his rod into the water, changing it from bitter to sweet; at the touch of a wooden rod a salutary spring gushed forth from a spiritual rock; likewise, in order to overcome Amalec, Moses stretched forth his arms with rod in hand; lastly, God's law is entrusted to the wooden Ark of the Covenant; all of which are like steps by which we mount to the wood of the cross.
Reply Obj. 1: The altar of holocausts, upon which the sacrifices of animals were immolated, was constructed of timbers, as is set forth Ex. 27; and in this respect the truth answers to the figure; but "it is not necessary for it to be likened in every respect, otherwise it would not be a likeness," but the reality, as Damascene says (De Fide Orth. iii). But, in particular, as Chrysostom [*Athanasius, vide A, III, ad 2] says: "His head is not cut off, as was done to John; nor was He sawn in twain, like Isaias, in order that His entire and indivisible body might obey death, and that there might be no excuse for them who want to divide the Church." While, instead of material fire, there was the spiritual fire of charity in Christ's holocaust.
Reply Obj. 2: Christ refused to undergo dishonorable sufferings which are allied with defects of knowledge, or of grace, or even of virtue, but not those injuries inflicted from without—nay, more, as is written Heb. 12:2: "He endured the cross, despising the shame."
Reply Obj. 3: As Augustine says (Contra Faust. xiv), sin is accursed, and, consequently, so is death, and mortality, which comes of sin. "But Christ's flesh was mortal, 'having the resemblance of the flesh of sin'"; and hence Moses calls it "accursed," just as the Apostle calls it "sin," saying (2 Cor. 5:21): "Him that knew no sin, for us He hath made sin"—namely, because of the penalty of sin. "Nor is there greater ignominy on that account, because he said: 'He is accursed of God.'" For, "unless God had hated sin, He would never have sent His Son to take upon Himself our death, and to destroy it. Acknowledge, then, that it was for us He took the curse upon Himself, whom you confess to have died for us." Hence it is written (Gal. 3:13): "Christ hath redeemed us from the curse of the law, being made a curse for us." _______________________
FIFTH ARTICLE [III, Q. 46, Art. 5]
Whether Christ Endured All Suffering?
Objection 1: It would seem that Christ did endure all sufferings, because Hilary (De Trin. x) says: "God's only-begotten Son testifies that He endured every kind of human sufferings in order to accomplish the sacrament of His death, when with bowed head He gave up the ghost." It seems, therefore, that He did endure all human sufferings.
Obj. 2: Further, it is written (Isa. 52:13): "Behold My servant shall understand, He shall be exalted and extolled, and shall be exceeding high; as many as have been astonished at Him [Vulg.: 'thee'], so shall His visage be inglorious among men, and His form among the sons of men." But Christ was exalted in that He had all grace and all knowledge, at which many were astonished in admiration thereof. Therefore it seems that He was "inglorious," by enduring every human suffering.
Obj. 3: Further, Christ's Passion was ordained for man's deliverance from sin, as stated above (A. 3). But Christ came to deliver men from every kind of sin. Therefore He ought to have endured every kind of suffering.