John Chrysostom

"For I speak to you Gentiles; inasmuch as I am the Apostle of the Gentiles, I magnify mine office; if by any means I may provoke to emulation them which are my flesh, and might save some of them." Again he endeavors much to get himself clear of untoward suspicion. And he seems to be blaming the Gentiles, and to be humbling their conceits, yet he gives a gentle provocation to the Jew also. And indeed he goes round about seeking to veil and allay this great ruin of theirs. …

Homily on Romans 19 ↗

Theophylact of Ohrid

Again consoling the Jews, he humbles the pride of the Gentiles, saying: I commend you for two reasons: first, because having been appointed as a teacher to you, I have need to glorify "my ministry," that is, you; and second, because I have in view to provoke to jealousy "my kinsmen according to the flesh" — the Jews. By the word "flesh" he showed his kinship with the Jews and his tender love for them. …

Commentary on Romans ↗

Thomas Aquinas

Then when he says, for I say to you, gentiles, he shows the same things by revealing the purpose of his ministry, which he first states; second, he assigns the reason, at for if the loss. In regard to the first it should be noted that whereas the previous parts of the epistle were directed to all the believers in Rome, whether from the Jews or from the gentiles, he is now directing his words to the converted gentiles. He says, therefore: I have stated that their fullness will mean riches for the world. …

Commentary on Romans ↗