(20) Therefore.--Rather, because. All mankind alike owe the penalty for their sins. Because not even the Law can protect its votaries. It has no power to justify. All it can do is to expose in its true colours the sinfulness of sin.

The proposition is thrown into a general form: not by the works of the (Jewish) Law, but by "works of law"--i.e., by any works done in obedience to any law. Law, in the abstract, as such, is unable to justify. It might perhaps, we gather from later portions of the Epistle, if men could really keep it, but no law can be kept strictly and entirely.

Knowledge of sin.--"Full and thorough knowledge."

In the state anterior to law, man is not supposed to know what is sinful and what is not. Conscience, gradually developed, comes in to give him some insight into the distinction, but the full knowledge of right and wrong, in all its details, is reserved for the introduction of positive law. Law has, however, only this enlightening faculty; it holds the mirror up to guilt, but it cannot remove it.

3:19,20 It is in vain to seek for justification by the works of the law. All must plead guilty. Guilty before God, is a dreadful word; but no man can be justified by a law which condemns him for breaking it. The corruption in our nature, will for ever stop any justification by our own works.Therefore by the deeds of the law,.... Hence it most clearly appears, that there can be no justification before God by the law, since it stops the mouths of men, and pronounces them guilty: by "the deeds of the law" are meant, works done in obedience to it, as performed by sinful men, which are very imperfect; not as performed by Adam in innocence or by Christ in our nature whose works were perfect; but as performed by sinful men and of themselves, and not as performed in and by Christ for them who is the fulfilling end of the law for righteousness to all believers: now by such works as these whether wrought before or after conversion, with or without the strength and grace of Christ,

there shall no flesh be justified in his sight: that is, no one person: "flesh" designs men, and men as corrupt and carnal, in opposition to God, who is a Spirit pure and holy; and may have respect to the vain opinion of Jews and Gentiles, who were vainly puffed up in their fleshly mind; the one on account of their wisdom and learning, the other on account of their righteousness; and includes all the individuals of human nature:, the word "justified", does not signify being made righteous by the infusion of righteousness, for the infusion of a righteousness, or holiness, is sanctification, which is a work of the Spirit of God, is internal, and imperfect, and so not justifying; but it is a forensic word, or legal term, and stands opposed to a being condemned; and signifies to be acquitted, discharged, and made righteous in a legal sense, which can never be done by an imperfect obedience to the law: men may be justified hereby in their own sight, and in the sight of others, but not in "his sight"; in the sight of God, who is omniscient, and sees not as man seeth; who is pure, holy, and righteous, and whose judgment is according to truth: this is said in direct contradiction to the Jews (z), who say,

"a man is not justified for ever, but by the words of the law:''

but in his sight none can be justified, but by the perfect obedience and righteousness of Christ. The reason for it is,

for by the law is the knowledge of sin; it discovers to a man, by the light of the Spirit of God, and as under his influence, and attended with his power, the sins both of his heart and life; and so he is convinced by it as a transgressor and finds himself guilty, and liable to condemnation and death; wherefore he can never hope for and expect justification by it. The Jews ascribe such an use as this to the law, which they suppose it performs in a very gentle manner;

"he that rises in the night (say they (a)), and studies in the law, , "the law makes known to him his sin", but not in a way of judgment, but as a mother makes known to her son in tender language:''

but this is generally done in a rougher way, for the law works wrath.

(z) Zohar in Lev. fol. 33. 3.((a) Zohar in Lev. fol. 10. 2.