What are the marks of a true church?

Question 09047.

What makes a true church true? It is not a theoretical question. People move house and need to find somewhere to worship. Believers watch a congregation drift and wonder whether it has crossed a line. Somebody starts a fellowship in a front room and asks whether it counts. Behind all of those situations sits the same question, and the Reformers answered it because they had to.

I want to set out the marks that identify a true church, distinguish them from the marks of a healthy one, and then say what to do with the answer, because knowing the criteria without knowing what to do with them helps nobody.

Why the Reformers Asked the Question

In the sixteenth century the question was urgent in a way it is not for us. If the Roman church was the church, then leaving it was schism and damnable. The Reformers had to be able to say what made a true church, and to say it from Scripture rather than from institutional continuity.

Their answer was economical. A true church is where the word of God is rightly preached and the sacraments rightly administered. Calvin’s Institutes puts it in almost those terms, and the Augsburg Confession says much the same. Later Reformed confessions added a third mark, the faithful exercise of church discipline.

That threefold answer, gospel, ordinances and discipline, has stood up well. I hold to it, with one addition I will come to, and I think it is still the sharpest tool we have for this question.

The First Mark: the Gospel Truly Preached

A true church preaches the gospel. Not religion, not moral improvement, not therapeutic encouragement with a Bible verse attached, but the message that God became man, lived without sin, died in the place of sinners, rose bodily and now calls all people to repent and believe.

Paul tells the Galatians that if anyone preaches a gospel contrary to the one they received, let him be accursed, and he says it twice in three verses because he wants no misunderstanding. This is the mark on which the others depend. A congregation may be warm, busy and well attended, and if it has lost the gospel it is not a true church whatever its history.

Note the word truly. It is possible to say the right words without preaching them. A pulpit that mentions the cross once a quarter, in passing, as an illustration of God’s love rather than as an atonement for sin, has functionally lost the gospel even if nothing heretical was ever said aloud.

The Second Mark: the Ordinances Rightly Kept

Jesus left His church two ordinances and expects them to be observed. Baptism marks entry, the Lord’s Supper marks ongoing fellowship, and between them they draw a visible line around the congregation. A body that has abandoned them has abandoned something its Lord commanded.

Rightly kept means according to their instituted meaning. Baptism as a sign of faith already exercised. The Supper as a memorial that proclaims the Lord’s death until He comes, with self-examination, not as a mechanism that confers grace by being performed. I have set out my reasoning on the second point in my article on the two ordinances.

This mark matters because the ordinances preach. They say something about the gospel every time they are performed, and if what they say has been changed, the gospel has usually been changed first.

The Third Mark: Discipline Exercised

The third mark is the one modern congregations have quietly dropped, and its absence explains a great deal. Discipline is how a true church maintains the boundary between itself and the world, not by excluding sinners, since it is composed of nothing else, but by refusing to affirm as a brother someone who persists unrepentant in serious and public sin.

Matthew 18:15-17 gives the procedure and 1 Corinthians 5 gives a case study. Paul is appalled that the Corinthians were proud while a man in their fellowship was in open immorality, and he tells them to act. A congregation that never does this eventually cannot say what it is, because membership has come to mean nothing in particular.

I know how this sounds in a culture that treats all correction as unkindness. But the alternative is a church that watches people destroy themselves and calls its silence love. More on how this works in practice in my article on church discipline.

The Mark I Would Add: Visible Love

The Reformers were answering a question about validity, and their three marks answer it. But Jesus gave a mark of His own, and I am not willing to leave it out. By this all people will know that you are my disciples, if you have love for one another.

I would not use it to unchurch a congregation, because love is harder to measure than doctrine and every church has cold seasons. But a fellowship where the gospel is preached accurately, the ordinances kept properly, discipline exercised firmly, and the members cannot stand one another has a serious problem that the three marks alone will not catch.

1 John treats love for the brethren as diagnostic of new life. If that is diagnostic of an individual believer, it is difficult to see why it would not also be diagnostic of a gathered body of them.

What Is Not a Mark

Now the negatives, because most people judging a church use the wrong criteria. Size is not a mark. Some of the healthiest congregations I know would fit in a large living room, and some of the largest have no gospel in them at all.

Age and building are not marks. A medieval parish church and a fellowship meeting in a school hall stand or fall by exactly the same tests. Denominational affiliation is not a mark either, in both directions; there are true churches in denominations I would not join, and there are independent congregations in serious error precisely because nobody was watching.

Style is not a mark, and this is where most arguments actually happen. Hymns or choruses, organ or band, liturgy or free order, robes or no robes. None of these appear anywhere in the New Testament’s account of what makes a true church. People fight about them because they are visible, and doctrine is not.

Marks of a True Church Against Marks of a Healthy One

It is worth keeping two categories apart. The marks above tell you whether a congregation is a church at all. They do not tell you whether it is a good one, and a true church can be a struggling, cold, badly led true church.

Health is a separate assessment: is the teaching feeding people, are members growing, is there fruit in evangelism, are the leaders qualified and accountable, is there joy? Sardis in Revelation 3 had a reputation for being alive and was dead, and Laodicea thought itself rich. Both were still addressed as churches, and both were in serious trouble.

The practical use of this distinction is patience. If your church is a true church that is unwell, the answer is usually to stay and work rather than to leave and look elsewhere. If it has lost the first mark, that calculation changes. My article on when to leave a church works through where that line falls.

When a Church Stops Being One

Congregations do not usually announce that they have crossed the line. The process is slow and the sign of it is not a formal denial but a quiet substitution. A pulpit that once preached the cross begins preaching kindness. Then the resurrection becomes a way of speaking about hope. Then the minister says he does not find the language of substitution helpful, and nobody objects because nobody has heard the language for years.

Once that has happened, the congregation may still be full, warm and busy. It may run the best food bank in the district. But it is no longer a true church in the sense the Reformers meant, because the thing that constitutes a church has been removed from it. The lampstand warning to Ephesus in Revelation 2:5 is not about a building being closed. It is about a congregation continuing without its Lord.

What should a believer do in that situation? Not leave at the first bad sermon, and not stay for thirty years hoping. Speak to the leadership, plainly and privately. Ask direct questions and listen to the answers. If the gospel has genuinely gone, and it will be obvious once you ask, then a true church is what you need and you should go and find one, sadly rather than angrily. The NET Bible notes on Revelation 2 are worth reading on what the warnings to the seven churches actually threatened.

So, now what?

If you are looking for a church, use these tests rather than the ones that come naturally. Sit through three sermons and ask whether you heard the gospel. Ask how they baptise and what they say at the Lord’s table. Ask what happens when a member falls into serious sin. Watch how the members speak to each other in the ten minutes after the service, which tells you more than the notices ever will.

And if you already belong somewhere, resist the temptation to grade your church against an imagined ideal. Ask instead what you contribute to each mark. The gospel is preached from the pulpit but it is carried by the people. Which of these marks would be a little stronger in your church if you took it seriously this year?

By this all people will know that you are my disciples, if you have love for one another.

John 13:35 (ESV)