📖 Biblical Definition
The mouth is the bodily aperture for speech, eating, and breath — and in Scripture, the chief outlet of the heart’s contents. Christ says it directly: "For out of the abundance of the heart the mouth speaketh" (Matthew 12:34); "those things which proceed out of the mouth come forth from the heart; and they defile the man" (Matthew 15:18). Paul says: "For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation" (Romans 10:10). The mouth is therefore the diagnostic instrument for the heart and the public organ of profession. "Set a watch, O LORD, before my mouth; keep the door of my lips" (Psalm 141:3). Christians guard the mouth as a sentry at the gate.
📜 Webster 1828 Definition
MOUTH, n.
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1. The aperture in the head of an animal, between the lips, by which it receives food and from which the voice issues. 2. The mouth of the Lord — in scripture, the source of authoritative revelation.
📖 Key Scripture
Matthew 12:34 — "Out of the abundance of the heart the mouth speaketh."
Romans 10:10 — "With the heart man believeth unto righteousness; and with the mouth confession is made unto salvation."
Psalm 51:15 — "O Lord, open thou my lips; and my mouth shall shew forth thy praise."
Deuteronomy 8:3 — "Man doth not live by bread only, but by every word that proceedeth out of the mouth of the Lord."
⚠️ Modern Corruption
Modern Christianity privatizes faith; Romans 10:10 ties confession of the mouth to salvation itself.
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Romans 10:10 makes confession with the mouth integral, not optional, to saving faith. The verse divides the work: with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation. The two cannot be separated. A faith that never says anything to anyone has reason to wonder whether it is in the heart at all.
Modern Western Christianity has been quietly trained to privatize faith. Spiritual life is what you do at home; public square is for vague civility. Romans 10 disagrees. The same Lord who gave you a new heart also gave you a mouth, and He intends to use both. Open your lips. Confess Him before men. Christ said the words land permanently: him will I confess also before my Father which is in heaven.
🔗 Greek & Hebrew Roots
Hebrew peh (H6310); Greek stoma (G4750).
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Usage
"A faith that never says anything to anyone has reason to wonder whether it is in the heart at all."
"Romans 10:10 ties the mouth to salvation itself; modern privatized faith disagrees with Paul."
"Out of the abundance of the heart the mouth speaketh — the words diagnose the heart."