Why it matters for reading Scripture
Traditions hold different canons, from the Protestant sixty-six books to the Ethiopian Orthodox canon with 1 Enoch. This field shows which books count for whom, and why.
Biblical studiesWhat does the text say?
Canon formation and canonicity is the study of how the books of the Hebrew Bible, the Greek Old Testament and the New Testament were gathered and recognized as Scripture. It examines the lists, councils, confessions and criteria that record that process, asks on what ground a book holds canonical authority, and sets the canons of the churches side by side.
Study v1.1, 23 October 2026
Traditions hold different canons, from the Protestant sixty-six books to the Ethiopian Orthodox canon with 1 Enoch. This field shows which books count for whom, and why.
The churches hold different canons, from 66 to 81 books; the New Testament's 27 books are first listed in 367, and Nicaea set no list of books.
Traditions divide on the deuterocanonical books and on whether the church establishes the canon or recognises it; scholars divide on when the Hebrew canon closed.
Holds the Tanakh, named from its three divisions, Torah, Nevi'im and Ketuvim, and counted as 24 books.
Lim calls the baraita in Bava Batra 14b to 15a, which sets out their order and writers, the earliest widely agreed rabbinic list. Josephus, Origen and Melito counted the same books as 22, and English Bibles reach 39 by dividing Samuel, Kings and Chronicles, separating Ezra and Nehemiah, and counting the Twelve one by one. Kohelet Rabbah warns that anyone who brings more than the twenty-four books into his house "introduces confusion into his house".
Hold the same books as the Tanakh, counted as 39, which Lim calls "the canon of Pharisaic-Rabbinic Judaism".
The Westminster Confession names 39 Old Testament and 27 New Testament books and says the Apocrypha "are no part of the canon of the Scripture". The Belgic Confession and Anglican Article VI give the same canonical books but keep a second class, which the church may read "for example of life and instruction of manners" without applying them "to establish any doctrine". Luther's Bible of 1534 set the Apocrypha between the Testaments, and the Formula of Concord gives a rule without a list.
Holds 46 Old Testament and 27 New Testament books, or 45 Old Testament books if Jeremiah and Lamentations are counted as one, as the Catechism of the Catholic Church counts them.
Its canon is set by conciliar decree: the Council of Florence listed the books on 4 February 1442, and the Council of Trent, on 8 April 1546, pronounced anathema on anyone who does not receive "the said books entire with all their parts" as "sacred and canonical". The First Vatican Council repeated the list on 24 April 1870, and the Clementine Vulgate placed the Prayer of Manasses and 3 and 4 Esdras in an appendix. Protocanonical and deuterocanonical, Reid notes, "are modern terms, not having been used before the sixteenth century".
Takes the Septuagint as its Old Testament, and the Orthodox Study Bible lists 49 Old Testament books.
The Synod of Jerusalem under Dositheus, in March 1672, judged Wisdom, Judith, Tobit, the History of the Dragon, Susanna, the Maccabees and Sirach "genuine parts of Scripture". Yet Orthodox writers state that no official decision fixes the exact contours of the canon, and Metropolitan Nektarios says "no canon has been given directly by an Ecumenical Council". The books beyond the Hebrew canon are called anagignoskomena, "Readable"; Wisdom supplies readings at many feasts and the Prayer of Manasseh is read at Great Compline.
Counts the same 39 books as canonical and prints the others marked non-canonical.
Philaret's Longer Catechism counts the Old Testament at "twenty-two, agreeing therein with the Jews", omits Sirach and others "Because they do not exist in the Hebrew", and gives the New Testament as "Twenty-seven". The Azbuka Very index marks 11 Old Testament books as non-canonical, and its encyclopedia says the canon question was not considered at Russian Church councils.
Its diocesan pages call the name Apocrypha a "misnomer" and speak instead of Deuterokanonika ("Second Canon"), listing Tobit, Judith, the Sequel of Esther, Wisdom, Sirach, Baruch, the Sequel of Daniel, 1 and 2 Maccabees and Psalm 151.
One answer counts 3 and 4 Esdras and 3 and 4 Maccabees as non-canonical. The whole of Revelation is read on the Night of Apocalypse. The position is documented through diocesan pages and a commentary index rather than a Holy Synod decree.
Reads the Peshitta, whose New Testament lacks 2 Peter, 2 and 3 John, Jude and Revelation; the Harklean version of 616 covers all 27 books.
The status of the apocrypha "still differs from pandect to pandect". Its lectionary reads both Testaments, "including the apocrypha, except the books of Revelation, Song of Solomon, and I and II Maccabees".
The church and the Bible Society of Armenia published in 2001 a Bible of 48 Old Testament and 27 New Testament books.
Fr Vahan Hovhanessian's catechetical list names, beyond the Hebrew books, Tobit, Judith, the Additions to Esther, Wisdom, Sirach, Baruch with the Letter of Jeremiah, the Additions to Daniel, 1 Esdras, 1 to 3 Maccabees and the Prayer of Manasses. He calls Revelation "one of the books which entered later into the Canon", and numerous Armenian Bibles included 3 Corinthians, "sometimes viewed as a canonical text".
Its corpus is commonly called "the 81 books", in a narrower canon of 54 Old Testament and 27 New Testament books that includes Enoch and Jubilees, and a broader canon of 46 and 35 that adds eight church-order books to the New Testament.
R. W. Cowley wrote that "The concept of canonicity is regarded more loosely than it is among most other churches", and Bruk Asale states that the church "has never had an officially closed canon of Scripture to date".
The fullest list is the metrical catalog of 'Abdisho bar Brika, headed "A.D. 1298" in Badger's translation, whose New Testament has the four Gospels, Acts, "the three Epistles of James, Peter, and John" and "fourteen Epistles of the great Apostle Paul", 22 books in all.
Kiraz calls the Peshitta the authorized text of the Assyrian Church of the East.
Holds an open canon on principle.
Its eighth Article of Faith reads: "We believe the Bible to be the word of God as far as it is translated correctly; we also believe the Book of Mormon to be the word of God". Its official, canonized scriptures, the standard works, are the Bible, the Book of Mormon, the Doctrine and Covenants and the Pearl of Great Price.
Hold the Hebrew canon closed against the Apocrypha.
The Watchtower of 1 February 1960 argued that "not one of the Christian Bible writers ever quoted from the Apocrypha". Insight on the Scriptures holds that canonicity "does not rest in whole or in part on whether some council, committee, or community accepts or rejects it".
Athanasius' Thirty-Ninth Festal Letter lists twenty-two Old Testament books and the books of the New Testament, and sets Wisdom, Sirach, Esther, Judith and Tobit among books "appointed by the Fathers to be read". David Brakke calls it "the first extant list of precisely the twenty-seven books of the current New Testament canon".636465
Jerome's Prologus galeatus sets out the Hebrew canon and says Wisdom, Sirach, Judith, Tobias and the Shepherd "are not in the canon".66
The metrical catalog of 'Abdisho bar Brika, headed "A.D. 1298" in Badger's translation, gives the Church of the East a New Testament of 22 books.45
The Council of Florence's bull Cantate Domino, dated 4 February 1442, lists an Old Testament that includes Tobit, Judith, Wisdom, Ecclesiasticus, Baruch and two books of Maccabees. Reid reads it as teaching "the inspiration of all the Scriptures" without formally passing on their canonicity.6970
Distinguish the two senses of canon, a rule and a list, and state which definition of canonicity is in use797080.
Gather the canon lists, each "a list of the books that an author or council considers to constitute the biblical canon", in date order, and record for each what it includes, what it omits and what it marks as doubtful81.
Read each witness in its own words before the modern accounts built on it, and keep the date of a surviving copy apart from the date of the list it carries8283.
Weigh the reasons ancient writers gave for accepting, doubting or refusing a book: apostolicity, the rule of faith, catholicity, liturgical use, antiquity and inspiration84855986.
Keep public reading apart from canonical standing: a book could be read in church yet not placed among the acknowledged books5982.
Put the same questions to each tradition: which books it holds, what document or body sets its list and when, what terms it uses for the books at the edge, and how its practice differs from its list2.
Test public claims against the councils, lists and confessions they appeal to: state the claim, trace where it comes from, set out what the primary evidence shows, and record what remains open.
The works below shaped the field and are cited in this study, from the earliest to the most recent. Hover over a book, or select it, to see its author and the sources behind it.
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The words that carry the most weight in this field, each defined from the sources of this study. Turn a card over to read its definition.
No. The twenty canons of the First Council of Nicaea in 325 contain no list of books, and the story of the books sorted at the altar first appears in the ninth-century Synodicon Vetus61120. Scholars of quite different positions answer the claim in similar terms: Bart Ehrman writes that "the Council of Nicaea did not debate or decide which books should belong in Scripture", and John Meade that "There is no historical basis for the idea that Nicaea established the canon and created the Bible"12162.
The theory that the canon was closed at a council at Jamnia, first formulated by Heinrich Graetz in 1871, was questioned by Jack P. Lewis in 1964 and judged no longer tenable by van der Kooij in 1995122123. Older reference works still carry the council model, while the specialist literature has set it aside, and when and how the Hebrew canon closed remains disputed1243.
No record shows a church removing Enoch from a canon it had previously defined: most churches never received it, and the Ethiopian Orthodox Tewahedo Church holds it canonical1251264341. Tertullian defended the book but reported that it "is not received by some, because it is not admitted into the Jewish canon either"125.
Trent's decree of 8 April 1546 followed lists already given by Florence in 1442 and by the African councils, while Athanasius and Jerome had placed several of the same books outside the canon1569127128129. Neither "added" nor "removed" describes the history neutrally, since each word assumes the answer one tradition gives to whether those councils bound the whole church121127.
Reviewed and approved by Duane Herholdt, BA (Theology), Chief Executive Officer, Numa Verse
Study version: v1.1, 23 October 2026 (theology map v1.27)
Last reviewed: 7 November 2026