John Chrysostom

"Much every way: chiefly, because that they were entrusted with the oracles of God." Do you see that, as I said above, it is not their well doings, but the benefits of God, that he everywhere counts up? And what is the word "entrusted?" It means, that they had the Law put into their hands because He held them to be of so much account that He entrusted to them oracles which came down from above. I know indeed that some take the "entrusted" not of the Jews, but of the oracles, as much as to say, the Law was believed in. …

Homily on Romans 6 ↗

Theophylact of Ohrid

He did not say that the Jews greatly surpass the other nations because they carried out such and such things well, but that "to them were entrusted the oracles of God," and this is a benefaction of God, not their own superiority. What does "entrusted" mean? Given, committed to their care; God deemed the Jews worthy and therefore entrusted to them the heavenly revelations.

Commentary on Romans ↗

Thomas Aquinas

Then when he says much every way, he answers the objection: first, in regard to Judaism's prerogative; second, in regard to the value of circumcision, at what shall we say then? (Rom 4:1). In regard to the first he does two things: first, he shows Judaism's prerogative; second, he rejects their boasting over the gentiles, at what then? Do we excel them? (Rom 3:9). In regard to the first he does three things: first, he states his position; second, he explains it, at first indeed; third, he excludes an objection, at for what if some. …

Commentary on Romans ↗