He foretels, that as their fathers killed the Prophets, so they also should kill Christ, and the Apostles, and other holy men. As suppose you had a quarrel with some one, you might say to your adversary, Do to me what you are about to do; but you do not therein bid him do it, but shew him that you are aware of his manoeuvres. And in fact they went beyond the measure of their fathers; for they put to death only men, these crucified God.
But because He stooped to death of His own free choice, He does not lay on them the sin of His death, but only the death of the Apostles and other holy men. Whence also He said, “Fill up,” and not “Fill over;” for a just and merciful Judge overlooks his own wrongs, and only punishes those done to others.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).