The Source of the Word
The mouth speaks from what fills the heart. The tongue steers the body, but no one can tame it. From what source do our words come?
Airton Humber · 07/10/26 · 7 min de leitura
The mouth reveals who governs us
In the beginning, God spoke.
“Let there be light.”
And there was light.
Before any work done by human hands, we find God speaking. His word is not empty. It is not just sound. God speaks and what he says produces.
Then God made man in his image and likeness.
And man also speaks.
Perhaps we have grown so used to this that we no longer notice how extraordinary it is. We think, we listen, we keep words in the heart and we pronounce them. Through them we comfort, teach, encourage, wound, deceive, forgive, condemn, bless and curse.
The word leaves the mouth and something happens.
The word comes in
Jesus told a parable about a seed scattered on different kinds of soil.
Then he explained that the seed was the word.
Some heard, but did not understand.
In explaining why, Jesus recalled:
“You will hear with your ears, but you will never understand… For the heart of this people has become dull; they hear with their ears reluctantly.”
The word enters through the ear.
But hearing the sound does not necessarily mean receiving the word.
That is why Jesus kept repeating:
“He who has ears to hear, let him hear.”
Everyone had ears.
But not everyone heard.
There is a path between the ear and the heart.
And perhaps that is why we are also taught:
“Let everyone be quick to hear, slow to speak.”
First, hearing.
Then, speaking.
Between one and the other is the heart.
The source
“Above all, guard your heart, for from it flow the springs of life.”
Jesus said:
“The mouth speaks from what fills the heart.”
And also:
“What comes out of the mouth comes from the heart, and that is what defiles a person.”
The mouth, therefore, reveals a source.
We can watch our words for a while. We can measure sentences, choose expressions and even learn a religious language.
But sooner or later, what fills the heart finds a way out.
That is why the problem does not begin in the mouth.
It begins at the source.
A small rudder
James compares the tongue to the bit placed in a horse's mouth.
A small piece steers a much larger animal.
Then he speaks of great ships, driven by strong winds and directed by a very small rudder.
So it is with the tongue.
Small.
But able to set a direction.
And James makes a striking claim:
“If anyone does not stumble in what he says, he is perfect, able also to keep his whole body in check.”
The tongue and the body are connected.
The small rudder points the direction of the great ship.
But soon after, James sets before us a seemingly unsolvable difficulty:
“No human being can tame the tongue.”
So how can there be someone who does not stumble in what he says?
Perhaps the answer is not in finally managing to master the tongue by force.
Perhaps it is in discovering who governs it.
I will be with your mouth
When Moses said he had difficulty speaking, God did not hand him a communication technique.
He said:
“I will be with your mouth and will teach you what you are to say.”
Then Aaron was placed beside him.
Moses would put the words in Aaron's mouth.
Aaron would be his mouth.
And God would be with the mouth of both.
The source was not Aaron.
The source was not Moses.
God spoke, Moses received, Aaron pronounced.
Much later, Jesus would tell his disciples that when they were brought before governors and kings, they should not worry about what they would say.
In that hour it would be given to them what to say.
“For it is not you who will be speaking, but the Spirit of your Father speaking through you.”
The mouth would still be theirs.
But the source would be another.
A man prudent in speech
Before David came into Saul's presence, someone described him:
“I know a son of Jesse… he knows how to play, he is valiant, a man of war, prudent in speech… and the Lord is with him.”
David was known for his discernment in words.
But his story would also show how a word can produce life or death.
When Shimei cursed him, David had the authority to answer with a word that could have resulted in that man's death.
He did not.
At another moment, however, an order from David sent to the battlefield ended with the death of Uriah.
David knew both sides of the word.
Perhaps this helps us hear his prayer with a different weight:
“Set a guard, Lord, over my mouth; keep watch over the door of my lips.”
He did not say only:
“I will guard my mouth.”
He asked the Lord to guard it.
And after his sin, his prayer went even deeper:
“Create in me, O God, a pure heart and renew within me a steadfast spirit.”
“Do not take your Holy Spirit from me.”
And then:
“Lord, open my lips, and my mouth will declare your praise.”
Guard my mouth.
Open my lips.
Do not take your Spirit from me.
David had understood that the problem was not only in the lips.
It was at the source.
Well-spoken or ill-spoken
With the tongue we bless the Lord.
And with the same tongue we curse people made in the likeness of God.
James asks how blessing and cursing can come from the same mouth.
And he uses the image of the spring again:
“Can the same spring pour out both fresh water and bitter?”
Blessing and cursing hold a very simple image.
Well-speaking.
Ill-speaking.
In Spanish this can still be clearly heard:
“Dios te bendiga.”
May God bless you.
May God well-speak you.
Not because human speech has some magical power in itself.
But because words carry what is at their source.
That is why it is written:
“Death and life are in the power of the tongue.”
The tongue can comfort or destroy.
It can reconcile or divide.
It can reveal the truth or build a lie.
It can set free or imprison.
It can well-speak.
It can ill-speak.
The father of lies
Jesus said that the devil is a liar and the father of lies.
But that does not mean every deception presents itself as an obvious lie.
From the beginning, the serpent approached the woman speaking about what God had said:
“Did God really say that?”
He did not begin by denying the Word.
He began by distorting it.
There was truth mixed with the deception.
Their eyes really were opened.
Man really did come to know good and evil.
But that word led him to death.
Deception can carry true words and still lead in the wrong direction.
God speaks.
And his word is truth.
The evil one also speaks.
But his word leads to deception.
Man, made in the image and likeness of God, also speaks.
So it is not enough to ask whether a sentence seems true.
We need to discern its source, its direction and its fruit.
It is written…
This same way of acting reappears when Jesus is tempted in the desert.
The devil does not say that God does not exist.
He does not say that the Scriptures are false.
He says:
“It is written…”
And he quotes the Word of God.
The letter was correct.
But it was being used to lead Jesus to throw himself from the top of the temple.
Jesus answered:
“It is also written…”
It was not Scripture against Scripture.
It was necessary to discern from what source that word came and where it intended to lead.
This makes the statement very significant:
“The letter kills, but the Spirit gives life.”
Paul was speaking of the difference between the engraved letter and the ministry of the Spirit.
He did not say the letter is dead.
He said:
The letter kills.
And Jesus said:
“The Spirit is the one who gives life.”
And he added:
“The words I have spoken to you are spirit and life.”
Life, therefore, is not simply in possessing the letter, knowing it or repeating it.
Life comes from the Spirit.
Paul said that we are like a letter from Christ, written not with ink, but with the Spirit of the living God; not on tablets of stone, but on the heart.
Once again we come to the source.
The word is received.
The Spirit gives life.
The heart is reached.
And what fills the heart finds a way out through the mouth.
So it is not enough to ask:
What is written?
We can also ask:
From what source is this word coming?
Where is it leading me?
What fruit is it producing?
The risk remains
This risk did not stay in the garden nor end in the desert.
We can be inside a church.
We can know the Bible deeply.
We can quote the Scriptures correctly.
We can teach.
We can preach.
We can write.
And still we need to discern the source.
Deception does not need to come saying:
“The Word of God is a lie.”
It can come saying:
“It is written…”
That is why knowing the letter, though precious, does not remove the need to listen.
He who has ears to hear, let him hear what the Spirit says.
A word can seem perfectly correct and still produce pride, condemnation, division, hatred, greed or domination over another.
On the other hand, the fruit of the Spirit shows itself in love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control.
This does not mean that every word that comes from the Spirit will be pleasant.
Jesus spoke hard words.
But his words were spirit and life.
The fruit also reveals the source.
The fruit of the Spirit
No human being can tame the tongue.
But self-control is fruit of the Spirit.
This changes everything.
Self-control is not simply man managing to govern himself.
It is man ceasing to be governed by his own impulses and learning to walk by the Spirit.
The Spirit governs.
The heart is transformed.
The mouth speaks from what fills the heart.
The tongue points a direction.
And the body follows.
Spirit → heart → mouth → tongue → body.
The word becomes work.
This is how Jesus described his own relationship with the Father:
“The words I say to you I do not say on my own; but the Father, who remains in me, does his works.”
Word and work.
The source and what comes from it.
Speak as one who has received
“Whoever speaks, let him speak as one who conveys the words of God.”
Perhaps here is one of the greatest responsibilities of the one who opens his mouth.
Not to speak in order to win.
Not to speak in order to show knowledge.
Not to speak simply because he can speak.
Hear.
Receive.
Keep it in the heart.
And then speak.
Because a word that came from the right source can reach another person's ear, touch his heart and produce fruit.
The word comes in.
The word remains.
The word goes out.
And it reaches another ear.
God spoke:
“Let there be light.”
And there was light.
Later, the one who is the light of the world said to his own:
“You are the light of the world.”
Perhaps our likeness to the Creator is not simply in the fact that we received the ability to speak.
It begins to become visible when what comes out of our mouth proceeds from the source of life.
So, more important than discovering the power of our words is discerning who is speaking in us and through us.
The mouth is ours.
The tongue can steer the whole body.
But it is the source that determines whether sweet or bitter water will flow from it.
The word reveals the source.
