Verse explainer
A king's mother tells her son: the measure of your power is how you use your voice for people who have none.
Open thy mouth for the dumb in the cause of all such as are appointed to destruction.
BSBOpen your mouth for those with no voice, for the cause of all the dispossessed.
The plain meaning
This verse comes from the instruction of King Lemuel's mother (v. 1) — a queen teaching her son what wise, just rule looks like. "The dumb" (Hebrew: 'illem) doesn't primarily mean those physically mute; it means those who cannot effectively speak on their own behalf in a legal setting — the poor who can't afford advocates, the orphan and widow too intimidated to argue their case before a court, the foreigner ignorant of local law. "Appointed to destruction" describes people whose opponents have already resolved to ruin them unless someone powerful enough intervenes. The mother's point is that a king's mouth is his most consequential instrument: he can remain silent and allow injustice to grind on, or he can open it and overturn a verdict the powerless could never overturn themselves. The verse is not a general call to be outspoken; it is a specific charge to those with authority — use it for the ones who have no access to power at all.
The common misreading
What the commentators say
Gill explains that 'the dumb' are not necessarily mute by nature but those who lack the eloquence, legal knowledge, resources, or boldness to speak effectively in court — the fatherless, the widow, the stranger passing through who doesn't know the country's laws. He notes the phrase 'appointed to destruction' describes those whose accusers have already determined to ruin them, making the king's intervention the only remaining hope.
JFB reads the verse as a call to plead for those who cannot plead for themselves — the orphan, the stranger, the oppressed — and connects it to Psalm 72:12 and Isaiah 1:17, where defending the poor and fatherless is the defining mark of righteous leadership. 'Appointed to destruction' means those who are otherwise ruined by their oppressors unless a figure of authority steps in.
The word behind it
"Dumb" or "silent one." The Hebrew root conveys being unable to speak effectively, not merely physical muteness. Gesenius notes it describes one rendered voiceless — whether by fear, poverty, ignorance of the law, or social powerlessness. This matters because the verse is not about physical disability; it is about those structurally excluded from having their case heard. The charge to 'open your mouth' is the direct counter: lend your voice to fill the gap their silence leaves.
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