
Ephesians 4:29 · World English Bible
Ephesians 4:29 Meaning Let No Corrupt Speech Proceed Out
Let no corrupt speech proceed out of your mouth, but only what is good for building others up as the need may be, that it may give grace to those who hear.

Ephesians 4:29 · World English Bible
Let no corrupt speech proceed out of your mouth, but only what is good for building others up as the need may be, that it may give grace to those who hear.
Words are food handed to another person, and rotten food harms whoever eats it. Hearing only a ban on foul language misses the larger half: speech that leaves someone weaker than before has failed, even when every word of it was true.
From the Orthodox reading below.
The same verse, read by 3 traditions.

ORTHODOX
Words are food handed to another person, and rotten food harms whoever eats it. Hearing only a ban on foul language misses the larger half: speech that leaves someone weaker than before has failed, even when every word of it was true.
A mouth can actually carry grace, which means God is willing to reach a person through the sentences of an ordinary neighbor. Daily talk becomes a kind of priestly work, and idle cruelty becomes a real wound rather than a small fault. The measure is what a sentence does to the hearer, so the useful question before speaking is whether they will be stronger for having heard it.

BUDDHISM
Vacī-kamma: Verbal action Speech counts as deed, a door of kamma standing alongside body and mind. Whatever proceeds out of the mouth cannot be called back, like a letter already dropped in the mailbox, and it goes on working in the hearer long after you have forgotten saying it. Watching that door is the whole practice here, since what leaves it ripens on the speaker too.
Pharusā vācā: Harsh speech Harsh speech is the rough word aimed to wound. Corrupt talk is rotten talk, and rot spreads: one cutting joke at the table sours the room the way a bad apple goes through the basket. The rot starts before the mouth opens, in the small satisfaction of putting someone down.
Sammā-vācā: Right speech Right speech is a factor of the eightfold path, trained like any other. Letting nothing corrupt proceed out is the abstaining half of that training, kept by catching the word while it is still an impulse behind the teeth. The other half asks the harder question of what is worth saying at all, and how much of it.
Kālaññutā: Knowing the right time Knowing the fitting moment is one mark of a mature person. "As the need may be" puts the measure outside yourself: the same honest word that steadies a friend on Monday flattens them on Friday, and reading which day it is takes more care than choosing the word. A doctor doses by the patient in front of them.
Piyavācā: Kindly speech Kindly speech is one of the four things that hold people together, listed beside outright giving. Building others up happens in ordinary sentences: thanks said out loud, credit given in front of others, a question asked about someone's week. It works like a gift where nothing leaves your pocket and the other person still walks away carrying something.
Mettā: Goodwill Goodwill is the attitude the words come out of. Grace reaches the hearer through tone before content, which is why one sentence arrives as help or as a slap depending on the wish behind it. Speaking from goodwill is what lets even a correction land as care, and the speaker feels it first.

SUFISM
Ḥifẓ al-lisān: Guarding the tongue Al-Ghazali gave a long stretch of his Revival to the harm the tongue does, treating it as the hardest limb to control. Words leave in a second and stay in someone for years, so the small gap between having a thought and saying it carries enormous weight. In that gap most of the damage dies quietly, and nobody ever learns what was almost said.
Whoever believes in God and the Last Day should speak well or keep quiet: staying silent is always an option The Prophet said this, and it names two choices only. Most harmful talk comes out when someone feels pressure to fill a silence or answer a jab, and the saying removes that middle ground. Someone who takes it seriously finds that half the sentences lining up never needed saying, and the room is better for it.
Ghība: Backbiting The word covers saying something about an absent person that they would hate to hear, and the Quran compares it to eating the flesh of a dead brother. In the moment it rarely feels like cruelty; it feels like honesty, or a joke among friends, which is why it moves through a group so fast. Once a circle picks up the habit, nobody in it can be sure how they are spoken about after they leave.
Naṣīḥa: Sincere good counsel A saying of the Prophet puts the whole of religion in this one word: wanting good for the other person and saying what serves them. The measure rules out the comment that is accurate but aimed at making someone smaller, and it changes what counts as a good sentence. Words that pass usually turn out shorter and kinder than the ones that came to mind first.
Rifq: Gentleness A saying of the Prophet has God loving gentleness and giving for it what harshness never earns. The same correction can leave someone defensive for a week or willing to change by evening, and the difference sits in the tone. A listener who feels respected can take in what was said, while one who feels attacked spends the time building a reply.
Orthodox lens
Who walked away from a conversation with me today, and did I leave them with more than they came with?
The Buddha asked four things of any sentence: is it true, is it kind, is it timely, is it useful. A true sentence that fails the other three is still the wrong thing to say.
The rabbis compared shaming someone in public to shedding blood, because the face drains of color the way a wound drains a body. Words are counted among the acts that can actually injure a person, not among the small things.
Ghazali gave a whole book of his Revival of the Religious Sciences to the faults of the tongue, counting backbiting and idle talk among the real sins rather than the small ones. He treated guarding speech as a daily discipline, not a matter of manners.

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