Therefore it — The blessing. Is of faith, that it might be of grace — That it might appear to flow from the free love of God, and that the promise might be firm, sure, and effectual, to all the spiritual seed of Abraham; not only Jews, but gentiles also, if they follow his faith.
Related Commentaries of Romans 4:16
Romans 4:16
16 Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all,