A Protestant Bible is usually an edition containing 66 biblical books: 39 in the Old Testament and 27 in the New Testament. It is not one particular English translation, and it is not a new collection of writings composed during the Reformation.
The term brings together several questions that are worth separating: which books count as scripture, how ancient texts are translated, and what authority the Bible has in church life. The history of Protestant Bibles includes distinctive answers to those questions, as well as a large inheritance shared with other Christians.
The 66-book canon
A canon is a recognised collection of authoritative writings. The Bible Society’s guide to the Bible identifies the usual Protestant collection as 39 Old Testament books and 27 New Testament books.
The Old Testament begins with Genesis and ends with Malachi in the customary Protestant arrangement. The New Testament begins with Matthew and ends with Revelation. A historical example of this collection appears in the Westminster Confession of Faith, chapter 1, which lists the books received as scripture.
The count does not identify a translation. The King James Version, New International Version and English Standard Version can all present these same books while using different English wording.
Likewise, a study edition may contain introductions, maps, notes and reading plans without treating those additions as further biblical books. The distinction between scripture and editorial material remains important even when both appear on the same page.
How the books are organised
The Old Testament contains several kinds of literature. Its opening five books present narratives of beginnings, Israel’s ancestors, the Exodus and laws governing communal life. Other books narrate Israel’s history, while Psalms, Proverbs, Job and related writings contain prayer, poetry and wisdom.
The prophetic books address judgment, faithfulness, hope and the relationship between God and the people. Calling some prophets “minor” concerns the relative length of their books, not a judgment that their message is unimportant.
The New Testament contains the four Gospels, Acts, letters and Revelation. The Gospels present Jesus’ life and teaching, death and resurrection. Acts narrates the early Christian movement; the letters address belief and the life of communities; Revelation uses visionary and symbolic language.
Genre affects reading. A lament in a psalm, an instruction in a letter and an image in an apocalyptic vision do not communicate in precisely the same way. An overview should provide this basic map before presenting a history of printing or translation.
How Protestant and Catholic collections differ
The Catholic list of biblical books published by the US bishops contains 46 Old Testament books and the same 27-book New Testament. The principal difference in the usual totals is therefore in the Old Testament, not in a separate Protestant set of Gospels.
The Catholic collection includes Tobit, Judith, Wisdom, Sirach, Baruch and First and Second Maccabees, together with additional material in Esther and Daniel. Catholic usage commonly describes these writings as deuterocanonical.
Protestant editions may group such material under the name Apocrypha. The terms reflect different judgments about authority, and the exact contents of an Apocrypha section should be checked rather than assumed to match every Catholic or Orthodox list.
This distinction also explains why finding a familiar translation in a volume with additional books does not necessarily mean that its translators regarded every printed book as having the same doctrinal status.
Apocrypha in Protestant history
Historical Protestant Bibles did not always omit these writings from the physical volume. Cambridge University Press’s account of the KJV Apocrypha notes that the 1611 King James Bible included them. Printing a text and recognising it as a final authority for doctrine are distinct decisions.
The Church of England’s Article VI describes the reading of other books for moral instruction while distinguishing them from books used to establish doctrine.
The Westminster Confession takes a more restrictive position: it excludes the Apocrypha from the scriptural canon and does not accord them religious authority above other human writings.
These examples reveal variation within Protestant history. A modern edition without an Apocrypha section should not become the assumed format of every Bible printed by Protestants since the sixteenth century.
What the Reformation changed
Reformers gave renewed prominence to scriptural authority, preaching and translations into languages used by wider populations. That development did not begin the existence of the Bible, nor did it introduce the first German biblical translation.
The Library of Congress description of the Mentelin Bible documents a printed German Bible from 1466. This predates Luther’s translation by decades and demonstrates that vernacular Bibles existed before the Reformation.
The Lutheran Quarterly Reformation timeline dates Luther’s German New Testament to 1522 and the complete Bible to 1534. It also identifies the work as a collaborative project involving other scholars.
Luther’s importance consequently lies in the particular achievement, influence and reception of his translation, not in a claim that nobody had previously encountered scripture outside Latin. Printing, education, religious controversy and patterns of worship all affected who could obtain and understand a Bible.
Tyndale and the King James Version
English Bible history also includes several distinct stages. The Library of Congress’s Tyndale exhibition account describes William Tyndale’s New Testament, translated from Greek and printed in 1526. Its circulation faced opposition, and copies were smuggled into England.
The King James Version followed much later. Cambridge University Library’s account of its preparation describes companies of translators working on different parts of the Bible before publication in 1611.
The KJV is therefore neither Luther’s English translation nor the work of King James personally translating each book. Royal sponsorship, scholarly collaboration and inherited English translation traditions are different parts of its history.
Sola scriptura does not mean interpretation without a community
Sola scriptura concerns scripture’s decisive authority in matters of Christian faith. It does not mean that every private interpretation must be accepted or that churches have no use for teachers, creeds or historical learning.
Westminster Confession 1.6–1.10 gives a particular Reformed account. It affirms scripture’s sufficiency while recognising that not every passage is equally clear, allowing the ordinary use of learning and describing scripture as its own interpretive rule.
Its understanding is more disciplined than the slogan that a reader can make the Bible mean anything. The confession itself is also evidence that a Protestant community can formulate a shared interpretation.
This principle should not be confused with sola fide, justification by faith. Scriptural authority and the way a person is justified are connected theological concerns, but they answer different questions.
NIV and ESV: different translation priorities
The complete New International Version appeared in 1978. The NIV Committee on Bible Translation’s notes describe an effort to combine faithfulness to the source with understanding of its meaning in English.
Biblica Europe’s explanation emphasises that languages have different grammatical patterns and idioms. Translation requires more than substituting one English word for each Hebrew or Greek word.
The English Standard Version was first published in 2001. Its stated translation philosophy is essentially literal, aiming to preserve wording and style while accounting for differences between languages.
These are descriptions of translation aims, not proof that one version is always accurate and another always mistaken. Wording can differ because of syntax, idiom, textual evidence or an interpretive judgment. A particular difference requires examination in its passage.
A critical Greek edition is not another English Bible
Scholars also work with editions of biblical texts in their ancient languages. The German Bible Society’s description of Nestle-Aland’s Novum Testamentum Graece identifies a Greek New Testament accompanied by a textual apparatus.
The apparatus records evidence relevant to differences between textual witnesses. This is a different task from deciding which books belong in the canon or translating the whole Bible for ordinary English reading.
A visible example of textual information appears in the NIV presentation of Mark 16, which flags the absence of verses 9–20 from the earliest manuscripts and some other ancient witnesses.
The note makes a textual question visible rather than silently treating every witness as identical. Readers should distinguish the biblical wording, the translators’ note and any further commentary supplied by a study edition.
Conclusion
The Protestant Bible is usually a 66-book scriptural collection shared across many translations and church traditions. Its history includes Reformation debates, influential vernacular translations and differing Protestant judgments about the Apocrypha. It did not begin as a completely new Bible written by the reformers.
Understanding canon, translation, textual criticism and church interpretation as distinct questions makes the subject much clearer. It explains how KJV, NIV and ESV can differ in wording while presenting the same core collection, and why the Bible’s authority does not eliminate the need for careful reading, scholarship and communal interpretation.
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