The Apostle Paul
Romans 11:17ESV·traditional attribution

But if some of the branches were broken off, and you, although a wild olive shoot, were grafted in among the others and now share in the nourishing root of the olive tree,

John Calvin Reformed @genevareformer

17. And if some of the branches, etc. He now refers to the present dignity of the Gentiles, which is no other than to be of the branches; which, being taken from another, are set in some noble tree: for the origin of the Gentiles was as it were from some wild and unfruitful olive, as nothing but a curse was to be found in their whole race.

Matthew Henry Presbyterian @wholebiblehenry

The apostle proposes here a plausible objection, which might be urged against the divine conduct in casting off the Jewish nation (Rom 11:1): "Hath God cast away his people? Is the rejection total and final? Are they all abandoned to wrath and ruin, and that eternal?

Commenting on Romans 11:1-32

John Gill Reformed Baptist @doctorgill

And if some of the branches be broken,.... This is to be understood, not of the exclusion of the Jews from their national church; for the persons designed by the "branches", were the principal members of it, as the civil and ecclesiastical rulers, the priests, Scribes, and Pharisees, and the far greater part of the people; and on the other hand, the apostles and followers...