And if it is by grace, then it is no longer by works. Otherwise, grace would no longer be grace.
6. If through grace, it is no more by works, etc. This amplification is derived from a comparison between things of an opposite character; for such is the case between God’s grace and the merit of works, that he who establishes the one overturns the other.
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
And if by grace, then is it no more of works,.... Upon election, being called "the election of grace", the apostle forms an argument, showing the contrariety and inconsistency of grace, and works, in that affair; proving, that it must be by the one or the other: and if by the one, then not by the other; and that these two cannot be mixed and blended together in this matter.