Biblion Bible Commentary
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Where Then Is the Boasting?
Romans 3:27-31
27 Where then is the boasting? It is excluded. By what kind of law? Of works? No, but by a law of faith. · WEB
Three consequences are drawn in rapid fire — boasting excluded, God undivided, and the law established rather than nullified.
Where then is the boasting? It is excluded.
The first casualty of justification by faith is named, and it is the one the whole indictment was tracking: boasting — the moralist's self-exemption Romans 2:1, the privileged man's glorying Romans 2:23, every human claim to standing on performance. The exclusion is total and structural: by what kind of law? Of works? No, but by a law of faith. A principle of works leaves room to boast by definition — wages are earned Romans 4:4. A principle of faith removes the room by definition: what is received as a gift cannot be flourished as an achievement.
Verse 28 states the letter's most famous summary: we maintain therefore that a man is justified by faith apart from the works of the law. The sentence that split the church's history is, in context, an inference already earned — three chapters closed every alternative before the conclusion was drawn.
Then the second consequence, and it is an argument from the Shema: or is God the God of Jews only? Isn't he the God of Gentiles also? Romans 3:29. If justification ran through the law, God would in practice be a tribal deity — savingly available only where Sinai was distributed. But Israel's own creed says God is one — so the one God must have one way of setting people right, offered on the same terms wherever he is trusted: he will justify the circumcised by faith and the uncircumcised through faith. Monotheism itself, rightly heard, demands a gospel for the nations.
And then the objection that governs the next five chapters, raised and denied in one verse: do we then nullify the law through faith? May it never be! No, we establish the law Romans 3:31.
The claim is bold and the letter spends chapters honoring it. Faith establishes the law as witness — the law and prophets testify to this righteousness Romans 3:21. It establishes the law as diagnosis — knowledge of sin was its assigned work Romans 3:20. And it establishes the law as standard: the gospel's aim is that the ordinance of the law might be fulfilled in us Romans 8:4, and love, the letter will say, is the law's fullness Romans 13:10. What faith ends is the law's use as a ladder. What it secures is everything the law actually said.
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