The Invisible Church and the Disappearing Discipline

A Critique of Modern Protestant Ecumenism

Modern American Protestantism often celebrates a broad Christian unity that its own historic confessions would have struggled to recognize. Presbyterians praise Baptists, Baptists admire Luther, and Anglicans celebrate Reformed theologians, even where their traditions disagree about baptism, the Eucharist, church government, and the authority to discipline believers.

Such generosity is not inherently wrong. But it raises a question: What becomes of the Church when mutually incompatible accounts of its nature are treated as equally legitimate?

Historic Protestantism was not simply a collection of interchangeable expressions of personal faith. Luther and Zwingli disagreed sharply over the Lord’s Supper. Reformed and Anabaptist communities disputed the very subjects of baptism. The Westminster Confession, the Thirty-Nine Articles, and Baptist confessions offered substantial, sometimes conflicting accounts of the visible Church.

Modern ecumenism often acknowledges these disagreements while declining to explain what their consequences should be.

The Problem of Ecclesiastical Discipline

The tension becomes especially apparent in church discipline.

Calvin treated discipline as indispensable to the Church’s ordered life, and later Reformed traditions gave it a central place. But discipline presupposes identifiable membership and a community capable of making judgments with real consequences.

Imagine a Presbyterian congregation excommunicating a member who then joins a Baptist congregation down the road.

If the Baptist congregation receives that person without examining the earlier judgment, the excommunication may have little practical effect outside its original jurisdiction. If the Baptist congregation honors the judgment, we must ask why and how one church’s authority should be recognized by another.

There are possible answers. Churches can communicate, investigate, and cooperate without sharing a governing hierarchy. Recognizing Christians outside one’s own denomination does not logically require treating every disciplinary decision as invalid.

Nevertheless, the example reveals a serious unresolved problem whenever churches claim genuine authority while treating conflicting ecclesiastical jurisdictions as interchangeable.

The Problem of Conflicting Ecclesiologies

The problem goes deeper still.

If one community recognizes infant baptism and another rejects it, they disagree not merely about a ceremony but about how someone enters the visible Church.

If they disagree about admission to communion, they disagree about who may participate in one of the Church’s central acts.

If they disagree about ordination, they disagree about who may govern and teach in Christ’s name.

To call all these communities equally legitimate without explaining how their contradictory judgments relate risks reducing ecclesial unity to a shared religious identity.

The invisible Church can become an escape from the difficulties posed by the visible Church.

One can affirm that true believers exist across denominational lines, but that affirmation alone does not establish that all denominations possess equivalent ecclesiastical authority. Nor does it answer who may bind, loose, admit, exclude, or reconcile.

The Anachronistic Appeal to Donatism

The Donatist controversy concerned, among other things, whether the Church and its sacraments were compromised by the failures of ministers who had betrayed the faith.

Augustine rejected the notion that sacramental validity depended on the personal purity of the minister. Yet Augustine did not conclude that visible ecclesiastical communion was optional. He defended the objectivity of baptism while insisting upon the unity of the Catholic Church.

It would therefore be anachronistic to treat every insistence on visible boundaries or ecclesiastical authority as though it were Donatist.

God’s grace not depending on the moral perfection of a minister does not entail that every religious body claiming Christ possesses the same authority.

The Unwillingness to Claim the True Church

I wish more Protestant churches would have the intellectual and theological honesty to declare that they believe themselves to be the one true Church.

If a denomination genuinely believes that its doctrine, sacraments, ecclesiastical government, and disciplinary practices represent the biblical constitution of Christ’s Church, then it ought to be willing to defend the implications of that conviction.

But contemporary Protestantism is often reluctant to make such a declaration. I suspect that this reluctance is not merely an expression of Christian charity. It also reflects the uncomfortable consequences of making an exclusive ecclesiological claim.

To declare one’s own communion to be the true Church necessarily calls into question the ecclesiastical legitimacy of neighboring communions whose doctrines and practices contradict its own.

The Presbyterian must explain why the Baptist’s rejection of infant baptism does not compromise the Baptist’s claim to be a legitimate church. The Baptist must explain why a Presbyterian congregation that, in his judgment, administers baptism to improper subjects nevertheless possesses ecclesiastical legitimacy. The Anglican must account for churches whose ministries lack the episcopal succession that his own tradition regards as significant.

These are competing claims concerning the constitution, authority, and sacramental life of the Church.

I suspect that many Protestant churches are unwilling to claim exclusively to be the true Church because they recognize both the difficulty of substantiating such a claim and the social consequences of making it.

Such a declaration would require more than an appeal to biblical interpretation. It would demand an account of why one particular ecclesiastical body possesses an authority that its neighbors lack, and how that authority has been preserved, transmitted, and exercised.

It would also unsettle the prevailing assumption that neighboring denominations are simply alternative expressions of the same ecclesiastical reality.

A church cannot indefinitely insist that its distinctive doctrines and practices are divinely mandated while simultaneously treating contradictory doctrines and practices as equally legitimate expressions of the Church without explaining how these claims can coexist.

A serious Protestant response may distinguish the true Church from a perfectly pure church, or the visible from the invisible Church. These distinctions deserve engagement rather than dismissal. But they leave a further question: What objective principle determines which ecclesiastical differences are permissible, and who has authority to decide?

An Appeal for Ecclesiological Honesty

This is not an argument that everyone outside a particular communion is necessarily without grace or cannot be Christian. The distinction between the Church’s recognizable boundaries and the freedom of God to act beyond them is essential.

Rather, it is an appeal for ecclesiological honesty.

A church that claims authority to teach, administer sacraments, and discipline must explain what distinguishes that authority from the competing claims of neighboring churches. It must explain whether its judgments are expressions of the authority of Christ’s Church or merely decisions of a voluntary religious association.

The central question is not whether Christians should treat one another charitably. They should. It is whether charity requires us to pretend that incompatible claims about the Church are compatible.

Unity grounded in truth is not identical to social harmony.

If the Church is a visible body with real authority, its boundaries and judgments cannot be reduced to personal preference. And if those boundaries and judgments ultimately have no significance beyond the congregation that asserts them, we must ask whether the historic language of church authority has survived only after its substance has been surrendered.