New Defender's Study Bible Notes
9:11 purpose of God. God is Creator of all, and needs no human justification for His actions. It is His prerogative to choose whomever He will. We can be confident that His “purpose” is good and holy, whether or not we understand it now; it is our responsibility simply to trust and thank Him.
9:11 not of works. Before Esau and Jacob were born, they had no record of works, so God could not have chosen one of them on that basis. But neither had either one yet exhibited either faith or rebellion, so God’s election of Jacob rather than Esau was not because of either works or faith, “but of Him that calleth.” In due time, of course, Jacob did manifest saving faith and demonstrate its validity by his works, but both had been foreordained by God in ways inscrutable to man.