John Chrysostom

For now the subject of enquiry is, With whom is this good and great thing to be found; is it with the circumcision or with the uncircumcision? And notice its superiority! For he shows that it is so far from shunning the uncircumcision, that it even dwelt gladly with it before the circumcision. For since he that pronounced it blessed was David, who was himself also in a state of circumcision, and he was speaking to those in that state, see how eagerly Paul contends for applying what he said to the uncircumcised. …

Homily on Romans VIII ↗

Theophylact of Ohrid

If, he says, blessedness belongs to the one whom the Lord does not impute sin to, that is, to the one who is justified, and Abraham was justified, then he most certainly received blessedness.

Commentary on Romans ↗

Thomas Aquinas

Then when he says, this blessedness then, he excludes a false interpretation of the text. For a Jew could interpret it as meaning that the grace of forgiveness of sins is conferred only on the circumcised. Therefore, to exclude this the Apostle first raises the question, this blessedness then, by which God confers justice without works, does it remain in the circumcised only, i.e., does it affect only the circumcised, or in the uncircumcision also, i.e., on the gentiles? …

Commentary on Romans ↗