La kanono povas esti malsama ĉe malsamaj konfesioj. La biblia kanono estas la listo de tiuj libroj, kiuj apartenas, laŭ la tradicio de la judismo aŭ de iu kristana konfesio, al la Biblio.The Eastern Orthodox, Oriental Orthodox, and Assyrian Christian churches may have minor differences in their lists of accepted books. The Catholic Church and Eastern Christian churches hold that certain deuterocanonical books and passages are part of the Old Testament canon. The second part is the New Testament, containing 27 books: the four canonical gospels, Acts of the Apostles, 21 Epistles or letters and the Book of Revelation. The first part of Christian Bibles is the Old Testament, which contains, at minimum, the 24 books of the Hebrew Bible but divided into 39 (Protestant) or 46 (Catholic) books and ordered differently. The Greek Septuagint, which closely resembles the Hebrew Bible but includes additional texts, is the main textual source for the Christian Greek Old Testament. It is composed mainly in Biblical Hebrew.

The Jewish Tanakh (sometimes called the Hebrew Bible) contains 24 books divided into three parts: the five books of the Torah ('teaching') the eight books of the Nevi'im ('prophets') and the eleven books of Ketuvim ('writings'). Different religious groups include different books in their biblical canons, in varying orders, and sometimes divide or combine books.

Differences exist between the Hebrew Bible and Christian biblical canons, although the majority of manuscripts are shared in common. Some books, such as the Jewish–Christian gospels, have been excluded from various canons altogether, but many disputed books are considered to be biblical apocrypha or deuterocanonical by many, while some denominations may consider them fully canonical. Various biblical canons have developed through debate and agreement on the part of the religious authorities of their respective faiths and denominations. The use of the word 'canon' to refer to a set of religious scriptures was first used by David Ruhnken, in the 18th century. The English word canon comes from the Greek κανών kanōn, meaning 'rule' or 'measuring stick'.

A biblical canon is a set of texts (also called 'books') which a particular Jewish or Christian religious community regards as part of the Bible.

Katolické církve uznávají 46 knih Starého zákona a 27 spisů, ze kterých se skládá Nový zákon.Celkem tedy katolické církve uznávají 73 knih, protestantská vydání Bible mají zpravidla 66 knih. Bible se skládá ze dvou částí, Starého a Nového zákona, jejichž kánony se utvářely zvlášť. Ačkoli je Bible z principu jedna, ne všechny církve a náboženské komunity do ní zahrnují tytéž knihy, a proto se biblický kánon liší podle náboženského vyznání.

Biblický kánon je termín označující soubor biblických knih.

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