Why are there so many denominations?

It is a fair question, and it is asked in good faith more often than Christians assume. If there is one truth and one book, why are there so many versions?

The number is not what you were told

The commonly cited figure — 33,000, or sometimes 45,000 — comes from the World Christian Encyclopedia, and it does not mean what people think.

The encyclopedia counts each national organisation separately. The same Baptist denomination operating in forty countries appears as forty entries. Independent congregations with no affiliation are counted individually. And the total includes groups that mainstream Christians of every tradition would not classify as Christian at all — Mormons, Jehovah's Witnesses and various new religious movements.

The number of genuinely distinct theological traditions is in the dozens: Catholic, Eastern Orthodox, Oriental Orthodox, Lutheran, Reformed, Anglican, Anabaptist, Baptist, Methodist, Pentecostal, and a handful of others.

What is actually shared

Here is the thing usually left out of the objection: the overwhelming majority of Christians worldwide — Catholic, Orthodox and most Protestants — confess the same creed, and have for 1,600 years.

The Nicene Creed affirms: one God the Father, creator; Jesus Christ his only Son, eternally begotten, of one being with the Father, incarnate, crucified under Pontius Pilate, risen on the third day, ascended, returning to judge; the Holy Spirit, Lord and giver of life, worshipped with Father and Son; one holy catholic and apostolic church; one baptism for the forgiveness of sins; the resurrection of the dead and the life of the world to come.

That is not a residue. That is Christianity.

Consider what the divisions are not about. Not whether God exists. Not whether Jesus is God. Not whether he died and rose. Not whether salvation is through him. Not whether Scripture is God's word.

Theological triage

The most useful tool here is a system of ranking, sometimes called theological triage.

First-order doctrines define Christianity. Deny them and you have moved outside it: the deity of Christ, the Trinity, the bodily resurrection, salvation by grace through faith, the authority of Scripture.

Second-order doctrines legitimately separate churches without separating Christians: baptism (infant or believer, mode), church government (episcopal, presbyterian, congregational), what happens at communion, the continuation of miraculous gifts, and views on election.

These matter. Two people who disagree about infant baptism cannot easily be in the same congregation, because the congregation has to do one or the other on a given Sunday. Denominations are, in part, the practical result — and they allow disagreement without schism from the faith itself.

Third-order doctrines should divide nobody: the timing of the rapture, worship style, translation preference, views on alcohol, how to organise a youth programme.

A great deal of Christian conflict is people fighting third-order battles with first-order intensity.

Where the major divisions came from

AD 451 — Chalcedon. The Oriental Orthodox churches (Coptic, Armenian, Ethiopian, Syriac) separated over the wording of Christ's two natures. Modern dialogue has concluded that much of this was a translation problem between Greek and Syriac vocabulary, and joint declarations in recent decades have affirmed substantial agreement — 1,500 years later.

AD 1054 — the Great Schism. East and West divided over papal authority and the filioque — the Western addition to the creed that the Spirit proceeds from the Father "and the Son", inserted unilaterally without an ecumenical council.

1517 onward — the Reformation. Genuine abuses (indulgences, inaccessible Scripture, corruption) plus genuine doctrinal recovery (justification by faith) plus politics. See the article on the Reformation for the full account, including its costs.

1609 onward. Baptists over believers' baptism. Methodists over holiness and church renewal. Quakers over inner light and church structure.

1906 — Azusa Street. The Pentecostal movement, now the fastest-growing stream in Christian history, and the reason a majority of the world's Christians today are in Africa, Asia and Latin America.

Some diversity is legitimate

Not every difference is a failure.

The New Testament itself shows variety. The Jerusalem church and the Antioch church operated differently. Acts 15 settled a genuine dispute — and the settlement was not uniformity but freedom, with a few practical concessions for the sake of fellowship.

Romans 14 gives the governing rule for genuinely disputable matters: "One person esteems one day as better than another, while another esteems all days alike. Each one should be fully convinced in his own mind" (Romans 14:5). And Paul's conclusion is not that they should agree, but that they should stop despising each other.

Lewis's image in the preface to Mere Christianity is the best short answer available:

It is more like a hall out of which doors open into several rooms. If I can bring anyone into that hall I shall have done what I attempted. But it is in the rooms, not in the hall, that there are fires and chairs and meals... You must keep on praying for light: and, of course, even in the hall, you must begin trying to obey the rules which are common to the whole house.

The hall is not the destination. But everyone in every room is in the same building.

And some of it is sin

Repent of it rather than explaining it.

How to choose a church

Non-negotiable: - The Bible is taught, seriously and regularly, in a way you can check yourself. - The gospel is clear — grace through faith in Christ, not performance or payment. - Leadership is accountable, financially transparent, with real safeguarding. - The historic creeds are affirmed. - People actually know one another.

Second-order: decide what you believe about baptism, government and gifts, and find a church that matches. This is legitimate, and it is not compromise.

Not the point: music style, building, size, whether the preacher is impressive.

Warning signs: any church where the leader cannot be questioned, where money is opaque, where leaving is treated as betrayal, or where they claim to be the only true church. Paul commended the Bereans for fact-checking him (Acts 17:11); a leader who resents that has told you something.

The unity that already exists

"There is one body and one Spirit — just as you were called to the one hope that belongs to your call — one Lord, one faith, one baptism, one God and Father of all" (Ephesians 4:4-6).

Read that carefully. Paul does not command us to create unity. He commands us to "maintain the unity of the Spirit in the bond of peace" (4:3) — to keep what already exists.

The unity is a fact about the church, established by God. What varies is how visible we manage to make it.

And it becomes visible in unexpected places: a Nigerian Anglican, a Korean Presbyterian, a Brazilian Pentecostal and a Ukrainian Orthodox believer will disagree about a great deal — and will recognise each other immediately when one of them starts talking about the cross.