Grammar teaches us to receive words accurately. Dialectic teaches us to test whether a claim is reasonable. Rhetoric teaches us to communicate truth so that another person can understand, remember and act upon it.
Rhetoric is sometimes associated with empty political speeches, emotional manipulation or language designed to conceal the truth. This is an abuse of rhetoric, not its proper purpose.
Every time we choose how to explain something, arrange an argument, tell a story or appeal to another person, we are using rhetoric. The question is not whether we will use it, but whether we will use it truthfully and well.
A falsehood can be presented attractively. A truth can be communicated so carelessly that nobody understands it. Christian teachers must therefore be concerned both with what they say and how they say it.
St Augustine teaches that the Christian speaker should seek to teach, delight and move.
We teach so that truth may be understood. We delight so that it may be received attentively and remembered. We move so that the hearer may put truth into practice.
These three purposes give Christian rhetoric its proper order.
Teach: Make the Truth Clear
The first responsibility of a speaker is clarity.
If people cannot understand what we are saying, eloquence has failed. Complicated vocabulary, long sentences and unnecessary technical language may create an impression of learning while leaving the hearer confused.
A good teacher does not make the truth smaller, but makes the path towards it clearer.
This requires the speaker to understand the subject. We cannot explain clearly what we have never properly considered. Confused language often reveals confused thought.
Before speaking, we should ask:
- What is the central truth I need to communicate?
- Which terms require explanation?
- What does the listener already know?
- What difficulty is most likely to prevent understanding?
- What should the listener remember afterwards?
Clarity also requires order. A speaker should not present everything at once. We begin with what is more easily known and proceed towards what is more difficult. Definitions come before arguments. Foundations come before conclusions.
Our Lord teaches with remarkable clarity. He uses ordinary realities—seed, bread, lamps, coins, vineyards, shepherds and family life—to reveal the mysteries of the Kingdom.
His simplicity is not shallowness. The parables remain profound because the visible image opens towards a reality greater than itself.
Christian teachers should learn from this. A familiar image can make a difficult truth visible. An example can help an abstract principle become concrete. Repetition can place an important truth within the memory.
But an illustration must serve the teaching. If people remember the amusing story but forget the truth it was meant to explain, the illustration has become a distraction.
The purpose is not to impress the hearer with the speaker’s cleverness. It is to make the truth clear.
Delight: Present Truth Worthily
Human beings are not disembodied minds. We respond to beauty, rhythm, story, imagery and well-chosen words.
Truth does not depend upon attractive presentation in order to be true. Yet fitting beauty can awaken attention and help truth enter the imagination.
The Psalms do more than state theological propositions. They give divine truth poetic form:
“The heavens shew forth the glory of God, and the firmament declareth the work of his hands.”
— Psalm 18:2
The same truth could be expressed more mechanically: creation provides evidence of divine wisdom and power. That statement is true. But the language of the Psalm allows us to perceive the heavens themselves as a proclamation of God’s glory.
Sacred Scripture uses songs, laments, proverbs, parables, visions, letters and historical narratives. God has not given us a collection of abstract definitions alone. He has spoken in forms suited to human memory and imagination.
The Church has likewise placed truth within creeds, hymns, prayers, sacred art, architecture and liturgical ceremonies. Beauty helps make the faith inhabitable. It allows truth to be not only analysed but contemplated.
Christian rhetoric should therefore possess a fitting beauty. Words should be chosen carefully. Sentences should have order and proportion. Important truths may be repeated. Contrasts can sharpen understanding. Images can open the imagination.
But beauty becomes dangerous when separated from truth.
Pleasant language can disguise falsehood. Sentiment can replace doctrine. A moving story may encourage feelings that are never examined by reason. An eloquent speaker may draw attention towards himself rather than God.
The beauty of Christian speech must be chaste. It should reveal rather than seduce, illuminate rather than dazzle, and lead beyond the speaker towards the truth.
Move: Call the Hearer to Action
Christian teaching is not complete when the hearer says, “That was interesting.”
Truth makes a claim upon us.
If God is our Creator, we owe him worship. If Christ died and rose for us, we must repent and believe. If the Eucharist is truly his Body and Blood, we must approach with faith and reverence. If our neighbour bears the image of God, we must treat that person with justice and charity.
Rhetoric therefore seeks to move the will towards the good.
This does not mean manipulating people into an emotional response. Emotion may assist action, but it must correspond to truth and remain governed by reason.
A preacher may speak about death in order to encourage repentance. That is not manipulation if death, judgement and the need for conversion are presented truthfully. It becomes manipulation if the preacher exaggerates, invents stories or deliberately produces panic for personal control.
Similarly, a charitable appeal may describe genuine suffering and invite generosity. It should not use misleading images, false urgency or guilt detached from truth.
Christian persuasion respects the freedom and dignity of the listener. It presents the truth, gives sound reasons, appeals to rightly ordered desires and invites a genuine response.
Grace, not technique, converts the heart. The speaker prepares, explains and exhorts, but the Holy Spirit acts inwardly.
St Paul understood this clearly:
“And my speech and my preaching was not in the persuasive words of human wisdom, but in shewing of the Spirit and power.”
— 1 Corinthians 2:4
St Paul does not reject careful speech. His letters display powerful reasoning, memorable images and deliberate structure. He rejects reliance upon human eloquence as though conversion could be manufactured by technique.
The Christian speaker works diligently while depending upon God.
The Character of the Speaker
A speaker communicates not only through words but through character.
People rightly ask whether someone is trustworthy, whether the speaker possesses knowledge of the subject and whether their life corresponds to what they teach.
A person of proven honesty will be heard differently from someone known to manipulate facts. A teacher who admits uncertainty may be more credible than one who pretends to possess an answer to everything.
For the Christian speaker, this responsibility is especially serious.
We may proclaim truths greater than our personal holiness. The truth of the Gospel does not depend upon the perfection of the preacher. Nevertheless, a life openly opposed to the message places an unnecessary obstacle before the hearer.
Humility is therefore essential.
The speaker should not pretend to be the source of truth. We receive what we hand on. The priest, catechist, parent or teacher stands beneath the Word of God and the teaching of the Church.
St Paul writes:
“For we preach not ourselves, but Jesus Christ our Lord.”
— 2 Corinthians 4:5
Christian rhetoric should make Christ more visible and the speaker less important.
This also requires honesty about the limits of our knowledge. Saying “I do not know” may be more truthful and persuasive than offering a confident but unreliable answer.
Authority is weakened when it claims more than it possesses. Trust grows when speech is accurate, proportionate and sincere.
Knowing the Listener
The truth does not change according to the audience, but the manner of explaining it may change.
A child, a person exploring Christianity and someone trained in theology should not necessarily receive the same explanation in the same words. Each should receive the same faith, but presented according to their capacity and circumstances.
Our Lord spoke differently to different people. He questioned the learned, encouraged the fearful, warned the complacent and explained his parables more fully to his disciples.
This was not dishonesty. It was pastoral wisdom.
To know the listener, we should ask:
- What does this person already understand?
- What words might be misunderstood?
- What fear or experience may be influencing the question?
- Is the person seeking truth, reassurance, permission or an argument?
- What is the next truth they are ready to receive?
Good rhetoric begins by listening.
If we answer a question that nobody asked, we may speak accurately without communicating. If we ignore the suffering beneath a person’s words, a correct answer may appear cold. If we offer comfort while avoiding a necessary truth, our kindness becomes unreliable.
Christian speech must unite clarity and charity.
St Paul tells us:
“Doing the truth in charity, we may in all things grow up in him who is the head, even Christ.”
— Ephesians 4:15
Truth without charity may become harsh. Charity without truth becomes sentimentality. In Christ, they belong together.
Rhetoric and the Passions
Human beings are moved by love, fear, hope, anger, sorrow and joy.
These passions are not evil in themselves. They become good or disordered according to their object and measure.
We should love what is good, fear what is truly dangerous, hope for what God has promised, grieve over sin and rejoice in the truth.
Good rhetoric helps the passions respond to reality. It does not create artificial emotion in order to bypass reason.
The prophets used powerful language because idolatry and injustice were serious. The Psalms express deep grief because suffering is real. Our Lord spoke severe warnings because eternal loss is possible. He also spoke tenderly to sinners who were ready to repent.
The strength of the language corresponded to the truth of the situation.
This gives us a useful test: is the emotional force of our speech proportionate to the reality?
If every inconvenience becomes a disaster, every disagreement a betrayal and every mistake an outrage, language loses proportion. People may be stirred repeatedly but become less capable of sound judgement.
Christian rhetoric seeks rightly ordered emotion, not continual excitement.
The Power of Story
Stories possess particular persuasive power because they allow us to see choices and consequences within human lives.
Our Lord’s parable of the Prodigal Son teaches about sin, repentance, mercy, self-righteousness and the joy of restoration. These truths are not presented as disconnected propositions. We see them embodied in a father and his two sons.
A good story can bypass familiar defences. The listener recognises the truth before realising that it applies personally.
When King David committed adultery and arranged the death of Uriah, the prophet Nathan told him about a rich man who stole a poor man’s only lamb. David condemned the injustice. Nathan then said:
“Thou art the man.”
— 2 Samuel 12:7
The story brought David to judge his own sin.
Stories must nevertheless be used truthfully. Personal testimony should not be exaggerated. Details should not be invented and presented as facts. Another person’s private suffering should not be turned into material without permission.
A story serves Christian rhetoric when it reveals truth while respecting justice and charity.
Rhetoric in the Digital World
Much contemporary communication is designed to seize attention.
Headlines provoke curiosity or anger. Short messages remove context. Images generate an emotional response before a claim has been examined. Repetition can make an assertion feel true even when no evidence has been offered.
Christians should not imitate every technique simply because it is effective.
A title may be engaging without being misleading. A short explanation may be simple without becoming false. An image may invite attention without manipulating fear or sentiment.
Before sharing or publishing something, we should ask:
- Is it true?
- Does the title accurately represent the content?
- Have I omitted something necessary?
- Am I seeking to help, or merely to provoke a reaction?
- Would I communicate this in the same way if the person concerned were present?
The speed of communication does not remove moral responsibility.
A false claim can travel widely before a correction is heard. A cruel sentence written in moments may wound someone for years.
St Paul advises:
“Let your speech be always in grace seasoned with salt: that you may know how you ought to answer every man.”
— Colossians 4:6
Christian speech should possess both grace and substance.
The Place of Silence
Rhetoric also teaches when not to speak.
Not every thought needs to be expressed. Not every accusation requires an immediate response. Not every private matter should become public.
Holy Scripture tells us that there is:
“A time to keep silence, and a time to speak.”
— Ecclesiastes 3:7
Silence may give us time to understand, pray and govern emotion. It can prevent an angry reaction from becoming a lasting injustice.
Silence can also be cowardly when truth must be defended. The challenge is not simply to speak or remain silent, but to discern which action serves truth and charity.
Christ remained silent before some accusations, yet spoke clearly when his testimony was required. His silence was not emptiness. It possessed purpose.
The Christian speaker should therefore learn three disciplines: to speak truthfully, to speak fittingly and to remain silent wisely.
Speaking as a Christian
The highest model of Christian rhetoric is Jesus Christ.
The officers sent to arrest him returned saying:
“Never did man speak like this man.”
— John 7:46
Christ’s words possess authority because he is the Truth. He speaks with perfect clarity, wisdom and love. He comforts without deceiving, warns without cruelty and calls sinners to repentance without denying them mercy.
We cannot speak with his perfection, but our speech should be conformed to his.
Grammar ensures that we understand words. Dialectic tests the truth and order of our reasoning. Rhetoric enables us to communicate what is true in a manner fitted to the hearer.
These arts reach their Christian fulfilment when they serve the Word made flesh.
The purpose of speaking well is not applause. It is not victory, influence or the appearance of intelligence. It is to make truth known, goodness desirable and the path towards God clearer.
Questions for Reflection
- Do my words draw attention towards truth or principally towards myself?
- When I speak strongly, is the emotional force proportionate to the reality?
- Do I adapt my explanation to the listener without changing the truth?
- Am I as careful about truth and charity online as I am in conversation?
- Is there a situation in which I should speak more clearly—or remain silent more wisely?
A Practical Exercise
Take this central truth:
Sunday Mass is the heart of Catholic life.
Explain it in three short paragraphs.
In the first, teach: explain clearly why Sunday Mass matters.
In the second, delight: use one fitting image, such as a family gathered around a table, a body receiving life from its heart, or travellers being given food for their journey.
In the third, move: offer a warm and direct invitation to attend Mass this Sunday.
Then read what you have written and ask:
- Is every statement true?
- Is the language clear?
- Does the image serve the truth?
- Does the invitation respect the listener?
- Does the writing point towards Christ rather than towards me?
Christian rhetoric speaks the truth so that it may be understood, loved and lived.
St. Mary's, St. John Bosco and St. Edward's 