“Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up.”
Ephesians 4:29
Words are never just noise. They are breath given shape, soul exhaled. They move unseen but not unfelt, carrying weight like wind that bends trees or like fire that sets forests alight.
Too often we read Paul’s words here as if he were writing about manners. No swearing, no coarse language. Keep your speech tidy. But he is not warning about vocabulary. He is speaking about reality. Words carry power. They make or unmake. They can rot, corrode, and decay, or they can strengthen, shelter, and bring life.
The word Paul uses for “unwholesome” is sapros, the same word for rotten fruit. It is not simply impolite but decayed. Rotten speech infects, spreads mould, carries death within it. Words spoken in bitterness can poison a room. Sarcasm can chip away at the soul. Gossip can hollow out trust. This is what Paul warns against, not etiquette, but the slow rot of death.
In contrast, he says, let your words be for building. The tongue is a mortar or a hammer. With it, you can carve space for another to stand taller. With it, you can lay the foundations of belonging. With it, you can raise walls of shelter or tear them down. Each sentence is a brick laid either toward ruin or toward home.
We do ourselves a disservice when we shrink Paul’s words to mean “do not swear.” As if he were giving us a vocabulary list. The call is far more cosmic. Words are not about politeness. They are about creation.
Think of C. S. Lewis describing Aslan singing Narnia into being. The song itself carried trees into leaf, stars into burning, rivers into flowing. Or Tolkien’s Ilúvatar, who composed the great Music, and the world unfolded in its harmonies. These stories point us back to the truest one. The God of Genesis spoke light into being, called out the waters, named day and night, and breathed life into dust. Creation itself is worded into existence.
Poets know this better than most. They understand that words can open doors into the indescribable. A line of poetry can carry what paragraphs of prose cannot. A blessing spoken over the fire in a Celtic home was not ornament; it was survival and worship. To call down God’s presence over the most ordinary act was to stitch heaven and earth together with words.
When we speak blessings, we are not simply being kind. We are imaging the God in whose likeness we were made. Humanity was created to reflect him, to echo his ways into the world. He is the One who speaks light and light appears, who calls forth seas and stars, who breathes life into dust. His speech does not merely describe, it creates.
This is why rotten talk matters. Not because it is impolite, but because it denies who we are meant to be. And this is why blessing matters. Each time we speak hope, forgiveness, truth, or love, we mirror the God who spoke and it was so. Our tongues were made to echo his creative Word, to join him in bringing light out of darkness and life out of dust.
This echoes through Scripture. In Genesis, God speaks the world into being: “And God said, ‘Let there be light,’ and there was light” (Genesis 1:3). Proverbs tells us, “The tongue has the power of life and death” (Proverbs 18:21). James warns that “the tongue is a small part of the body, but it makes great boasts… Consider what a great forest is set on fire by a small spark” (James 3:5). He goes on to call it “a restless evil, full of deadly poison” (James 3:8). John’s gospel goes further still, saying, “In the beginning was the Word, and the Word was with God, and the Word was God… and the Word became flesh and dwelt among us” (John 1:1, 14). God does not just speak life into the world, he becomes the Word, dwelling within the world he called into being. If our speech is careless, it corrodes. If it is filled with grace, it participates in that same divine rhythm of creation and incarnation.
The mystics and saints knew this well. The Desert Fathers would spend days in silence, not because words were evil, but because words were heavy. They believed speech carried eternity in its syllables. St John of the Cross spoke of the need to keep words few, so that when they are spoken they carry the fragrance of heaven. The Celtic tradition spoke of blessing everything, lighting the fire, milking the cow, and closing the door at night. Words turned into prayers, words spoken as life poured over the ordinary. To speak was to join God in consecrating the world.
Think about the words that have most shaped your life. A teacher telling you that you had a gift. A friend who whispered, I am here. A parent who said, I love you. Perhaps, too, you carry words that wound, words that still echo years later. Both linger. Both shape the way you stand, the way you see yourself, the way you step into tomorrow.
This is why Paul urges us not to let rot fall from our mouths. To speak decay is to diminish the image of God in another. But to speak blessing is to water it, to call it forth, to give it space to bloom. When I say, you belong here, I am not merely transferring information. I am planting a seed of belonging. When I say, I forgive you, I am not just announcing a fact, I am opening a door to a new future. Words are sacramental. They are material things that carry invisible grace.
It matters in the ordinary. In how we speak to our children at the end of a long day. In how we address our partners in weariness or joy. In how we speak of others when they are not in the room. In how we comment online, in how we talk about people we disagree with, in how we handle the small irritations of life. Each moment carries a choice. Will I speak rot or life? Will my words corrode or build?
Think again of the power of a single phrase.
I forgive you.
You belong here.
You are not alone.
Peace be with you.
Each is more than air. Each is a doorway opening. Each is a world remade.
So may our mouths be more than noise. May our words become breath that lifts. May we learn the holy art of speaking life, until our speech itself becomes a kind of prayer.
Scribbling Theology 