John Chrysostom

"And if some of the branches be broken off." And yet above thou didst say that the more part perished, and a few were saved only. How came it then that speaking of those that perished, thou hast used a "some," which is indicative of fewness? It is not, he replies, in opposition to myself, but out of a desire to court and recover those that are distressed. Observe how in the whole of the passage one finds him working at this object, the wish to solace them. And if you deny it, many contradictions will follow. …

Homily on Romans 19 ↗

Theophylact of Ohrid

He called the unbelieving Jews broken-off branches, for they became unworthy of the holy root. And he well said "were broken off," for God never rejected them in this way, although they sinned in many ways. And in place of them, the broken off, you, the Gentile, he says, were grafted in. …

Commentary on Romans ↗

Clement of Alexandria

The graft uses as soil the tree in which it is engrafted. Now all the plants sprouted forth simultaneously in consequence of the divine order. Wherefore also, though the wild olive is wild, it crowns the Olympic victors.… Now we see that the wild trees attract more nutriment because they cannot ripen. The wild trees therefore have less power of secretion than those that are cultivated. And the cause of their wildness is the absence of the power of secretion. …

The Stromata Book 6 ↗

Thomas Aquinas

After showing that the fall of the Jews was useful and reparable, the Apostle now forbids the gentiles to boast against the Jews. In regard to this he does two things: first, he shows that the converted gentiles must not boast against the Jews; second, he answers an objection from the gentiles, at you will say then. In regard to the first he does two things: first, he forbids the gentiles to boast against the Jews; second, he gives the reason for this prohibition, at but if you boast. …

Commentary on Romans ↗