The Apostle Paul
Romans 9:13BSB·traditional attribution

So it is written: “Jacob I loved, but Esau I hated.”

John Calvin Reformed @genevareformer

13. As it is written, Jacob I loved, etc. He confirms, by a still stronger testimony, how much the heavenly answer, given to Rebecca, availed to his present purpose, that is, that the spiritual condition of both was intimated by the dominion of Jacob and servitude of Esau, and also that Jacob obtained this favor through the kindness of God, and not through his own merit.

Matthew Henry Presbyterian @wholebiblehenry

The apostle, having made his way to that which he had to say, concerning the rejection of the body of his countrymen, with a protestation of his own affection for them and a concession of their undoubted privileges, comes in these verses, and the following part of the chapter, to prove that the rejection of the Jews, by the establishment of the gospel dispensation, did...

Commenting on Romans 9:6-13

John Gill Reformed Baptist @doctorgill

What shall we say then?.... A form of expression the apostle frequently uses, when he is about to introduce an objection, as is what follows: is there unrighteousness with God? This is not an objection of his own, but of an adversary, which he takes up and returns an answer to; and which itself greatly serves to settle and confirm the true sense and meaning...