17 And bearing his own cross, he went forth to that place which is called Calvary, but in Hebrew Golgotha.
Chrysostom: The same was done typically by Isaac, who carried the wood [Gen 22:6]. But then the matter only proceeded as far as his father’s good pleasure ordered, but now it was fully accomplished, for the reality had appeared.
Theophylact: As there Isaac was let go, and a ram offered [Gen 22:13]; so here too the Divine nature remains impassible, but the human, of which the ram was the type, the offspring of that straying ram, was slain.
Chrysostom: He carried the badge of victory on His shoulders, as conquerors do.
18 Where they crucified him, and with him two others, one on each side, and Jesus in the midst.
Chrysostom: They crucified Him with the thieves: And two others with Him, on either side one, and Jesus in the midst; thus fulfilling, filling the prophecy, And He was numbered with the transgressors [Isa 53:12]. What they did in wickedness, was a gain to the truth. The devil wished to obscure what was done, but could not. Though three were nailed on the cross, it was evident that Jesus alone did the miracles; and the arts of the devil were frustrated. Nay, they even added to His glory; for to convert a thief on the cross, and bring him into paradise, was no less a miracle than the rending of the rocks.
Augustine: The cross, if you consider it, was a judgment seat: for the Judge being the middle, one thief, who believed, was pardoned, the other, who mocked, was damned: a sign of what He would once do to the quick and dead, place the one on His right hand, the other on His left.
Scripture from the Douay-Rheims Bible. Commentary from St. Thomas Aquinas, Catena Aurea, Vol. IV (London: Rivington, 1845).