Biblion Bible Commentary
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Every Mouth Stopped
Romans 3:19-20
19 Now we know that whatever things the law says, it speaks to those who are under the law, that every mouth may be closed, and all the world may be brought under the judgment of God. · WEB
Two verses end the trial — the whole world without a defense, and the law reassigned from ladder to mirror.
Now we know that whatever things the law says, it speaks to those who are under the law, that every mouth may be closed, and all the world may be brought under the judgment of God.
The first clause blocks the last exit. The catalogue just quoted was Israel's own Scripture, and whatever things the law says, it speaks to those who are under the law — the people holding the book are the people the book addresses. No reader gets to file the indictment as someone else's mail.
And the purpose clause is the trial's end: that every mouth may be closed. The image is a defendant with nothing left to say — the moment in court when the evidence has been read and the accused, invited to respond, stands silent. Three chapters of argument have been aimed at exactly this silence: the pagan's mouth closed by creation's witness Romans 1:20, the moralist's by his own verdicts Romans 2:1, the privileged man's by his own syllabus Romans 2:21–24, and now all the world together, answerable, with no mitigating speech to offer.
Verse 20 then states the conclusion the whole section was built to reach, and it is the letter's first great negative: because by the works of the law, no flesh will be justified in his sight.
The echo is the psalmist's plea — don't enter into judgment with your servant, for in your sight no man living is righteous Psalms 143:2 — with works of the law inserted at the point of failure. Law-keeping cannot acquit, not because the law is defective but because the court has just established what the defendants are. A perfect standard applied to under sin Romans 3:9 yields only conviction.
And the closing clause reassigns the law's function in eight words: for through the law comes the knowledge of sin.
Not the cure of sin — the knowledge of it. The law is a mirror, not a ladder: it shows with precision what is wrong, and showing is its ministry Romans 7:7. Chapter 7 will call the law holy while making the same point at length. The reassignment leaves the courtroom in total silence with a convicted world standing in it — which is the exact acoustic the next two words of the letter were written for: but now Romans 3:21.
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