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Bible Lexiconφθέγγομαι
Dodson Greek Lexicon (2010)G5350verb

φθέγγομαι

phtheggomai

I speak aloud, utter

Definition

The verb φθέγγομαι (phtheggomai) means to utter a sound, speak aloud, or declare something clearly and audibly. In the New Testament, it is used for formal or significant speech, often with a tone of authority or proclamation. In Acts 4:18, the religious authorities command Peter and John not to 'speak' (phtheggomai) or teach in the name of Jesus, highlighting its use for public, authoritative declaration. In 2 Peter 2:16, it describes the donkey 'speaking' with a human voice to rebuke Balaam, emphasizing a supernatural or divinely enabled utterance. In 2 Peter 2:18, it refers to false teachers 'uttering' arrogant boasts, indicating speech that is empty or deceptive.

Biblical Usage

This word appears only three times in the New Testament, all in contexts involving authoritative or noteworthy speech. In Acts 4:18, it is used in a legal prohibition against apostolic preaching. In 2 Peter 2:16 and 2:18, it describes speech in contrasting scenarios: one a miraculous rebuke by an animal, the other the empty boasts of false teachers. The pattern shows it is reserved for speech that is formal, public, or carries significant weight, whether divine, human, or deceptive.

Etymology

Derived from the ancient Greek root φθεγ- (phtheg-), meaning 'to utter a sound.' It is related to φθόγγος (phthengesthai), meaning 'voice' or 'sound.' The word implies the production of an audible utterance, often with a focus on the clarity or distinctness of the sound produced, and was used in classical Greek for poetic or oracular speech.

Semantic Range

This word is theologically significant as it highlights the nature of divine communication and authoritative proclamation. In Acts 4:18, it underscores the conflict between human authority and God's command to preach. In 2 Peter 2:16, it illustrates God's sovereignty in using even an animal to convey truth, while in 2 Peter 2:18, it warns against deceptive speech that leads others astray. Understanding phtheggomai enriches reading by emphasizing that speech in these contexts is not casual but carries spiritual weight and consequences.

In ancient Greek culture, φθέγγομαι was often associated with formal, public, or poetic utterance, such as in oracles, proclamations, or performances. This contrasts with more common words for speaking (like λέγω, lego) and conveys a sense of something being voiced with intention and audibility. The New Testament usage taps into this cultural understanding to signify speech that is noteworthy or authoritative.

λέγω (lego, G3004) — a general term for 'to say' or 'speak,' often used for ordinary speech. λαλέω (laleo, G2980) — to talk, speak, or utter, frequently used for conversational or ongoing speech. ἀποφθέγγομαι (apophtheggomai, G669) — to declare or speak forth boldly, a more forceful compound form.

Word Details

Strong's NumberG5350
Part of Speechverb
Greek Formφθέγγομαι
Transliterationphtheggomai
How this works

Definitions are from the Dodson Greek-English Lexicon, a concise public-domain resource suitable for introductory word study. Brief glosses are supplemented by STEPBible TBESG data (CC BY 4.0). For advanced research, standard scholarly references include BDAG (Danker, 3rd ed.) and LSJ.

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Scripture References

Appears in 4 verses in the Bible
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