mouth
The Hebrew word peh carries the literal meaning of mouth, the physical opening through which breath, food, and words pass. But the biblical writers pushed this word far beyond anatomy. Peh becomes the primary image for divine speech, prophetic declaration, and covenantal command. When Moses says Israel did not live by bread alone but by every word that proceeds from the mouth of God, the word for mouth is peh. The same organ through which a human eats is the organ through which God creates, commands, and saves. That parallel is intentional.
Beyond speech, peh carries the sense of an edge or opening. The phrase 'the mouth of the sword' in Hebrew is pi-cherev, using this same root, because a blade cuts the way a word cuts, with a sharp and decisive edge. Peh also appears in measurements and proportions. A 'double portion' in Hebrew is pi-shnayim, literally 'two mouths,' the amount a mouth needs to speak twice as much, or receive twice as much.
The prophets use peh to mark the authority behind a message. 'Thus says the LORD' throughout the prophetic books carries the weight of peh. When a prophet speaks from the mouth of God, the word isn't opinion or insight. It's the breath of the one who made breathing possible. Peh is where heaven meets earth, where the invisible becomes audible, where command becomes reality.
Most of us read the phrase 'the mouth of the LORD has spoken' and pass right over it because we've heard it so many times. I spent years treating it as a stock phrase, a formal signature at the end of a prophecy. But peh stopped me when I realized the same word describes the edge of a sword. The prophets weren't just saying God spoke. They were saying his speech cuts. It opens what was closed. It divides what was whole. When Isaiah says a word goes out from the mouth of God and will not return empty, he's describing something with force and direction, not just sound. Your mouth and God's mouth share the same Hebrew word, and that weight deserves a pause.
Peh derives from a Proto-Semitic root meaning mouth or opening, shared across Aramaic, Arabic, and Ugaritic. It gives its name to the seventeenth letter of the Hebrew alphabet, pe or peh, which is pictured in ancient Semitic script as an open mouth. Related forms include piv (his mouth) and pi (my mouth or the mouth of). The word connects to the root for edge or opening, giving Hebrew a rich double meaning between verbal speech and physical threshold.
Where peh appears in Scripture, and why each verse showcases it.
And he humbled you and let you hunger and fed you with manna, which you did not know, nor did your fathers know, that he might make you know that man does not live by bread alone, but man lives by every word that comes from the mouth of the LORD.
The phrase 'mouth of the LORD' is peh-YHWH, placing divine speech on the same level as physical sustenance. What the mouth receives and what the mouth of God produces are set in direct comparison.
So shall my word be that goes out from my mouth; it shall not return to me empty, but it shall accomplish that which I purpose, and shall succeed in the thing for which I sent it.
Peh here anchors the unstoppable effectiveness of divine speech. The word doesn't drift; it goes out from a specific source, the mouth of God, with the force of a commissioned messenger.
Balaam said to Balak, 'Behold, I have come to you! Have I now any power of my own to speak anything? The word that God puts in my mouth, that must I speak.'
Balaam's phrase 'puts in my mouth' is the causative form tied to peh. The prophet's mouth becomes the instrument of God's peh, showing how human speech can be taken over by divine address.
In your steadfast love give me life, that I may keep the testimonies of your mouth.
The testimonies of God are described as coming from his peh. The psalmist frames obedience not as following a rulebook but as listening and responding to a voice, a living mouth still speaking.
And the number of those who lapped, putting their hands to their mouths, was 300 men, but all the rest of the people knelt down to drink water.
Here peh appears in its plainest physical sense, the literal mouth in the act of drinking. This ground-level use shows how the same word carries both the mundane and the sacred, reminding us peh never loses its bodily weight even in theological contexts.
Words in the same semantic family.
Every video where Adam teaches on this word, in publication order.
