Did the Council of Nicaea choose the books of the Bible?

What Nicaea decided, and what it didn’t

In 325 Constantine gathered some three hundred bishops at Nicaea, today’s İznik in Turkey, to settle one question: was Christ created, or fully God like the Father? What they produced survives. A creed. A ruling that all churches keep Easter on the same day. Twenty short canons on church discipline, about ordaining bishops, readmitting lapsed Christians and the rank of great sees like Alexandria. None of it lists the books of the Bible, and no ancient account of the council says the subject came up. The story of the council itself is told in what was the Council of Nicaea.

Where the myth comes from

The idea has deep roots. Jerome, in the preface to his Latin translation of the book of Judith, wrote that the Council of Nicaea was said to have counted Judith among the Scriptures. No canon or record of Nicaea mentions Judith, and scholars doubt the remark means any vote on a list.

A later legend went much further. The Synodicon Vetus, a Greek account of church councils written in 887, tells how the bishops laid all the disputed books on an altar and let a miracle sort the true from the false. In the 1700s Voltaire spread the tale to mock the church. Then, in 2003, Dan Brown’s novel The Da Vinci Code had a character claim that Constantine commissioned a new Bible and that Jesus’s divinity won at Nicaea by a close vote. It was not close. All but two of the bishops signed the creed.

What Constantine really did with Bibles

There is a grain of truth behind “Constantine made the Bible.” Around 331 he asked Eusebius, bishop of Caesarea, to have fifty copies of the sacred Scriptures written on fine parchment for the new churches of Constantinople, at the emperor’s expense (Life of Constantine 4.36). He was buying books, not choosing them. We do not even know whether those copies held both Testaments or only the New.

How the canon really formed

The Christian Bible grew from below, through reading in worship, over some three centuries:

• The Jewish Scriptures. The first Christians already had a Bible, the Law, the Prophets and the Writings, mostly read in the Greek Septuagint.
• About 180. Irenaeus of Lyon insists there are four Gospels, no more and no fewer, like the four winds (Against Heresies 3.11.8).
• In the years around Nicaea. Eusebius, who sat at the council, sorts books into accepted, disputed and rejected. James, Jude, 2 Peter, and 2 and 3 John are still disputed, and he wavers on Revelation (Church History 3.25).
• 367. Athanasius of Alexandria, in his yearly Easter letter, lists the 27 books of today’s New Testament, the first such list known.
• 393 and 397. Regional councils at Hippo and Carthage, in North Africa, endorse the same New Testament.

Eusebius is the best witness that Nicaea settled nothing here. He was in the room, and he still called five letters disputed. The process was slow, local and shaped by use, not by an emperor’s order.

Churches still differ today. Protestant Bibles have 66 books. Catholic Bibles have 73, a list the Council of Trent defined in 1546. The Ethiopian Orthodox Church keeps a wider canon that includes 1 Enoch and Jubilees. Each of these lists has its own history, and none of them began at Nicaea.