7 But why, O prophet, tell us, and for what reason, was the temple made desolate? Was it on account of that ancient fabrication of the calf? Was it on account of the idolatry of the people? Was it for the blood of the prophets? Was it for the adultery and fornication of Israel? By no means, he says; for in all these transgressions they always found pardon open to them, and benignity; but it was because they killed the Son of their Benefactor, for He is coeternal with the Father.
Whence He says, “Father, let their temple be made desolate; for they have persecuted Him whom You of Your own will smote for the salvation of the world;”that is, they have persecuted me with a violent and unjust death, “and they have added to the pain of my wounds.” In former time, as the Lover of man, I had pain on account of the straying of the Gentiles; but to this pain they have added another, by going also themselves astray. Wherefore “add iniquity to their iniquity, and tribulation to tribulation, and let them not enter into Your righteousness,” that is, into Your kingdom; but “let them be blotted out of the book of the living, and not be written with the righteous,” that is, with their holy fathers and patriarchs.
Source: Expository Treatise Against the Jews (New Advent)