Romans 3:19-20 - Exposition

Now we know that what things soever the Law ( ὁ νόμος here for the Old Testament generally as the embodiment and exponent of the Law) saith, it speaketh to them that are under the Law (not to the world outside, but to those within its own sphere): that every mouth (the Jew's as well as the Gentile's) may be stopped, and all the world may become guilty before God. Because by works of law ( νόμος here suitably without the article; see on Romans 2:13 ) shall no flesh be justified in his sight: for through law is knowledge of sin. In this concluding verse the apostle briefly intimates the reason of law's inefficacy for justification, anticipating, after a manner usual with him, what is afterwards to be more fully set forth, as especially in Romans 7:1-25 . The reason is that law in itself only defines sin and makes it sinful, but does not emancipate from it.