Römer 3:19

Now we know that what . . . the law--that is, the Scriptures, considered as a law of duty. saith, it saith to them that are under the law--of course, therefore, to the Jews. that every mouth--opened in self-justification. may be stopped, and all the world may become--that is, be seen to be, and own itself. guilty--and so condemned before God.

From all this Paul infers that it is in vain to look for justification by the works of the law, and that it is to be had only by faith, which is the point he has been all along proving, from Rom 1:17, and which he lays down (Rom 3:28) as the summary of his discourse, with a quod erat demonstrandum - which was to be demonstrated. We conclude that a man is justified by faith, without the deeds of the law; not by the deeds of the first law of pure innocence, which left no room for repentance, nor the deeds of the law of nature, how highly soever improved, nor the deeds of the ceremonial law (the blood of bulls and goats could not take away sin), nor the deeds of the moral law, which are certainly included, for he speaks of that law by which is the knowledge of sin and those works which might be matter of boasting. Man, in his depraved state, under the power of such corruption, could never, by any works of his own, gain acceptance with God; but it must be resolved purely into the free grace of God, given through Jesus Christ to all true believers that receive it as a free gift. If we had never sinned, our obedience to the law would have been our righteousness: "Do this, and live." But having sinned, and being corrupted, nothing that we can do will atone for our former guilt. It was by their obedience to the moral law that the Pharisees looked for justification, Luk 18:11. Now there are two things from which the apostle here argues: the guiltiness of man, to prove that we cannot be justified by the works of the law, and the glory of God, to prove that we must be justified by faith. I. He argues from man's guiltiness, to show the folly of expecting justification by the works of the law. The argument is very plain: we can never be justified and saved by the law that we have br…

3:19 Paul speaks of the entire Old Testament as the law (see also 1 Cor 9:8, 9; 14:21, 34; Gal 4:21). • Those to whom it was given (literally those in the law) were the Jews, who were given the Scriptures. • How can Paul conclude that the entire world is guilty before God on the basis of evidence from the Old Testament that Jews are sinful? He argues from the greater to the lesser, a standard Jewish rhetorical technique: If the law shows that the Jews, God’s own people, are guilty, then how much more are the Gentiles, who have not had the benefit of God’s instruction, also guilty.