Romans 3:31

31.Do we then make, etc. When the law is opposed to faith, the flesh immediately suspects that there is some contrariety, as though the one were adverse to the other: and this false notion prevails, especially among those who are imbued with wrong ideas as to the law, and leaving the promises, seek nothing else through it but the righteousness of works. And on this account, not only Paul, but our Lord himself, was evil spoken of by the Jews, as though in all his preaching he aimed at the abrogation of the law. Hence it was that he made this protest, —

“I came not to undo, but to fulfill the law.” (Matthew 5:17.)

And this suspicion regards the moral as well as the ceremonial law; for as the gospel has put an end to the Mosaic ceremonies, it is supposed to have a tendency to destroy the whole dispensation of Moses. And further, as it sweeps away all the righteousness of works, it is believed to be opposed to all those testimonies of the law, by which the Lord has declared, that he has thereby prescribed the way of righteousness and salvation. I therefore take this defense of Paul, not only as to ceremonies, nor as to the commandments which are called moral, but with regard to the whole law universally. (128)

For the moral law is in reality confirmed and established through faith in Christ, inasmuch as it was given for this end — to lead man to Christ by showing him his iniquity; and without this it cannot be fulfilled, and in vain will it require what ought to be done; nor can it do anything but irritate lust more and more, and thus finally increase man’s condemnation; but where there is a coming to Christ, there is first found in him the perfect righteousness of the law, which becomes ours by imputation, and then there is sanctification, by which our hearts are prepared to keep the law; it is indeed imperfectly done, but there is an aiming at the work. Similar is the case withceremonies, which indeed cease and vanish away when Christ comes, but they are in reality confirmed by him; for when they are viewed in themselves they are vain and shadowy images, and then only do they attain anything real and solid, when their end is regarded. In this then consists their chief confirmation, when they have obtained their accomplishment in Christ. Let us then also bear in mind, so to dispense the gospel that by our mode of teaching the law may be confirmed; but let it be sustained by no other strength than that of faith in Christ.