John Chrysostom

"Where is boasting then? it is excluded," he says. "By what law? of works? Nay, but by the law of faith." Paul is at great pains to show that faith is mighty to a degree which was never even fancied of the Law. For after he had said that God justifieth man by faith, he grapples with the Law again. And he does not say, where then are the well doings. of the Jews? where their righteous dealing? …

Homily on Romans 7 ↗

Theophylact of Ohrid

The Apostle proved that we are justified through faith, which is why he rightly asks the Jew: where then is that in which you would boast and take pride? He does not say: where is virtue? For the Jews did not have virtue, but only boasting. And he continues: "it is excluded," which means: it is no longer the time to boast. Before Christ it was timely to boast in the law, but now it is no longer timely, for it has become evident that boasting in it is useless. For if the law could justify us, there would be no need for us of Christ. …

Commentary on Romans ↗

Thomas Aquinas

After showing that Jews have no advantage over the gentiles either in regard to sin or to justice, he now presents the intended conclusion, by rejecting the boasts whereby they preferred themselves to the gentiles. He does three things. First, he proposes that this boasting be excluded; second, the reason for this exclusion, at by what law; third, the way it is excluded, at for we account. In regard to the first he does two things. …

Commentary on Romans ↗