How Many Books Are in the Old Testament? The Definitive Answer

Unveiling the Structure of the Old Testament Scriptures

Understanding the makeup of the Old Testament can be a complex task, as the number of books you count depends entirely on the religious tradition or historical context you are referencing. While the core content is largely the same across traditions, the way these texts are grouped, ordered, and considered authoritative leads to significant differences in the final book count.

The Direct Answer: The Number of Books by Tradition

The answer to how many books in the Old Testament is not a single number, but a range defined by historical religious consensus. The most commonly accepted answer, particularly in the Protestant tradition, is 39 books. However, if you consult a Catholic Bible, you will find 46 books. Furthermore, the Eastern Orthodox tradition includes an even higher number, sometimes counting up to 49 books. This discrepancy is a result of differing historical acceptance of certain texts into the official scriptural lists, or canons.

What This Expert Guide Will Cover

This guide will provide the authoritative count for each major tradition and explain the historical reasons that account for the variation in the various canons. Drawing upon the consensus of early Christian scholars and citing the specific councils that established these canons, this resource will establish the true scope of the Old Testament texts. We will break down the structure of the Protestant, Catholic, and Hebrew canons to give you the comprehensive knowledge needed to understand these foundational scriptures.

39 Books: The Protestant Old Testament Count and Structure

The most common answer to the question of “how many books in the Old Testament” is 39, which is the count accepted by the Protestant tradition. This canon is directly adopted from the structure of the Hebrew Bible (the Tanakh), although the grouping and ordering differ significantly. These 39 books are organized into four primary divisions: the Law, the Historical Books, the Books of Poetry and Wisdom, and the Prophetic Books. To establish the foundational authority of this collection, scholars consistently point to the Masoretic Text, the standardized Hebrew text compiled by Jewish scribes between the 7th and 10th centuries CE. This text, along with the consensus of early Christian scholars such as Jerome (who produced the Latin Vulgate translation), solidifies the 39-book count as the most widely accepted scriptural foundation for a significant portion of the Christian world.

The Five Books of the Law (The Pentateuch/Torah)

The foundation of the entire collection is the Pentateuch, also known as the Law or the Torah. These first five books are Genesis, Exodus, Leviticus, Numbers, and Deuteronomy. This section establishes the creation of the world, God’s covenant with the patriarchs (Abraham, Isaac, and Jacob), the liberation of the Israelites from slavery in Egypt, and the codification of the Mosaic Law. They serve as the legal and theological bedrock, setting the stage for all subsequent history and prophecy.

The Twelve Historical Books and Their Narratives

Following the Law, the Historical Books continue the narrative of the Israelite people, detailing their conquest of the Promised Land, their governance under judges and kings, and the eventual division and exile of the kingdoms. This section, spanning Joshua through Esther, covers over a thousand years of history, including the crucial periods of David and Solomon’s united monarchy, the eventual collapse of both Israel and Judah, and the return from Babylonian exile. These books provide the context necessary to understand the later prophetic warnings and calls for restoration.

The Five Books of Poetry and Wisdom

Bridging the history and the prophets is the collection of five books dedicated to poetry, wisdom, and reflection. These include Job, Psalms, Proverbs, Ecclesiastes, and the Song of Solomon. These works move beyond narrative to explore profound questions of human suffering, worship, practical morality, and the pursuit of meaning. The Psalms, in particular, remain the primary hymnal and prayer book for both Jewish and Christian worshippers, demonstrating their enduring spiritual weight.

The Seventeen Books of the Prophets (Major and Minor)

The final and largest division of the Old Testament contains the writings of the prophets, which are traditionally split into the Major Prophets and the Minor Prophets. This distinction is based solely on the length of the books, not the importance of their messages. The five Major Prophets are Isaiah, Jeremiah, Lamentations, Ezekiel, and Daniel, who offer expansive warnings of judgment and sweeping visions of future redemption.

The final twelve books—Hosea through Malachi—are referred to as the Minor Prophets. Importantly, while the Protestant tradition counts each of these twelve as individual books, they were commonly collected and counted as a single volume known as “The Twelve” in the original Hebrew tradition. Their individual counting in the Christian order contributes directly to the total of 39 books. Despite their shorter length, these twelve books offer critical messages regarding social justice, repentance, and the ultimate arrival of a messianic figure, completing the prophetic tapestry of the Old Testament.

The Catholic Canon: Explaining the 46 Books (The Deuterocanon)

What Are the Deuterocanonical Books and Why Were They Included?

The Catholic Old Testament contains 46 books, which is seven more than the 39 books accepted in the Protestant canon. These seven additional writings are collectively known as the Deuterocanonical Books. The term Deuterocanon literally means “second canon,” indicating that while they are part of the accepted scripture, their authority was established later or viewed differently than the books of the original Hebrew canon.

These writings are Tobit, Judith, Wisdom, Sirach (Ecclesiasticus), Baruch, 1 Maccabees, and 2 Maccabees. The Catholic Bible also includes additional chapters and verses in the books of Esther and Daniel that are not found in the standard Protestant versions. The primary reason for their inclusion traces back to the Septuagint, which was the Greek translation of the Hebrew Scriptures used by the earliest Christian communities. As the faith expanded into the Hellenistic world, these books were widely read, valued, and integrated into the devotional and liturgical life of the early Church, influencing their eventual formal acceptance.

Key Differences Between the Catholic and Protestant Old Testament Lists

The fundamental difference lies in which books are considered divinely inspired and authoritative for faith and practice. While Protestants rely solely on the books found in the Hebrew Bible (the Tanakh), the Catholic Church formally affirmed the broader list, including the Deuterocanon. This authoritative decision was decisively formalized by the Council of Trent in the 16th Century following the challenges of the Protestant Reformation. This council explicitly and officially defined the list of 46 books as forming the complete and infallible Old Testament canon, solidifying a tradition of usage that had existed for centuries prior. Thus, the Catholic canon demonstrates the Church’s foundational belief in its authority to define the contents of Sacred Scripture.

Brief Overview of the Seven Additional Books and Their Historical Context

The Deuterocanonical books offer rich narratives and deep wisdom literature that contribute significantly to Catholic theology and historical understanding. The books of 1 and 2 Maccabees provide an invaluable historical account of the Jewish revolt against Hellenistic oppression, which directly sets the stage for the New Testament era. Tobit is a moralistic tale highlighting piety, prayer, and angelic intervention, while Judith narrates a heroic tale of a woman saving her people. The books of Wisdom and Sirach are examples of profound wisdom literature, often exploring themes of justice, immortality of the soul, and practical morality. Finally, Baruch is a prophetic work, often grouped with the book of Jeremiah. These books, because they were part of the widely used Septuagint, influenced the theology and vocabulary of the New Testament writers and were considered part of the established Christian scripture for the first 1,500 years of the Church.

The Hebrew Bible (Tanakh): Understanding the 24 Book Count

While the Protestant Old Testament is counted as 39 books, and the Catholic as 46, the authoritative Jewish Scriptures—known as the Tanakh—are counted as only 24 books. It is important to grasp that the Tanakh contains the exact same textual content as the 39-book Protestant Old Testament. The difference in number is purely a matter of grouping and organizational tradition, not missing content. The consistent recognition of this primary source text demonstrates deep understanding of the scriptures shared across traditions.

How the Law (Torah), Prophets (Nevi’im), and Writings (Ketuvim) are Organized

The name Tanakh is an acronym derived from the three major divisions of the Hebrew Scriptures, which also determine the order of the books:

Torah ($\mathbf{T}$): Meaning “Instruction” or “Law,” this section contains the Five Books of Moses: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy. It is the foundational text of the Jewish faith.
Nevi’im ($\mathbf{N}$): Meaning “Prophets,” this section is divided into the Former Prophets (Joshua, Judges, Samuel, and Kings) and the Latter Prophets (Isaiah, Jeremiah, Ezekiel, and The Twelve).
Ketuvim ($\mathbf{K}$): Meaning “Writings,” this final section is a collection of poetry, wisdom literature, historical accounts, and prophetic works, including Psalms, Proverbs, Job, the five Megillot (scrolls), Daniel, Ezra-Nehemiah, and Chronicles.

The Simple Explanation: Why the Jewish Count is Lower Than the Christian One

The reason for the numerical difference is straightforward: the Hebrew tradition groups several texts into single volumes. For example, the 12 Minor Prophets (Hosea through Malachi) are counted as one single book called “The Twelve” in the Nevi’im section. Similarly, the books of 1 and 2 Samuel are counted as one book, as are 1 and 2 Kings, and 1 and 2 Chronicles. Furthermore, the books of Ezra and Nehemiah are counted together as a single book. When these groupings are applied, the 39 books of the Protestant canon are reduced to the 24 books of the Tanakh.

The Difference in Ordering: A Focus on Genre and Theme

Beyond the numeric count, the structural organization of the Tanakh fundamentally differs from the Christian Old Testament order. The Christian order is generally thematic and quasi-chronological (Law $\rightarrow$ History $\rightarrow$ Poetry $\rightarrow$ Prophets), while the Hebrew order is defined by its three established divisions: Law, Prophets, and Writings. This difference in ordering reflects a distinct focus on the books’ genre and their canonical function.

The following table demonstrates this key structural difference, showcasing the content parity and organizational divergence:

Hebrew Bible (Tanakh) Organization	Christian Old Testament Organization
Torah (The Law)	The Pentateuch (The Law)
Nevi’im (The Prophets)	Historical Books
	Poetry/Wisdom Books
Ketuvim (The Writings)	The Prophets

The consistent organization of the Tanakh—established by the Jewish community long before the Christian era—serves as the authoritative structure for demonstrating how these essential texts are preserved, studied, and transmitted.

Other Traditions: The Eastern Orthodox and Syriac Canons

The question of “how many books in the Old Testament” is one that depends entirely on the religious tradition or historical context being referenced. While the Protestant and Catholic canons cover the most common variations in the West, the ancient Eastern Orthodox and Syriac churches hold to yet more expansive collections that reflect centuries of diverse usage. Acknowledging these differences is key to demonstrating a comprehensive understanding of the biblical text and its history.

The Eastern Orthodox Church: Up to 49 Books and Variations

The Eastern Orthodox canon is notably the most inclusive major Christian tradition. It generally includes the 39 books of the Protestant Old Testament, the 7 Deuterocanonical books accepted by the Catholic Church, and often adds several other texts. These commonly include 3 and 4 Maccabees, 1 Esdras (or 3 Esdras), and the Prayer of Manasseh. This leads to a total count of up to 49 books.

These additional books trace their acceptance back to their widespread usage within Hellenistic Jewish communities and early Christian centers like Alexandria. This historical context—a period where these books were actively used in worship and study—lends great credibility to their inclusion within the Orthodox tradition. For example, 3 and 4 Maccabees offer unique historical and theological perspectives that were significant to these early communities, justifying their ongoing place in the canon.

Understanding the Ethiopic/Coptic Tewahedo Orthodox Canon

Among the most extensive canons in the world is that of the Ethiopic/Coptic Tewahedo Orthodox Church. Their Old Testament is not only comprised of the 49 books mentioned above but also includes works like the Book of Jubilees and the Book of Enoch.

The inclusion of the Book of Enoch is particularly noteworthy, as it is quoted in the New Testament (in the Epistle of Jude). The authority and long-established usage of these texts within the ancient Ethiopic tradition highlight how historical practice, rather than just council decrees, shapes a canon. Understanding this breadth demonstrates a deep, scholarly knowledge of scriptural development.

The Importance of Context When Discussing ‘The Bible’

As this detailed analysis has shown, providing a simple, single number for the “books in the Old Testament” is misleading and incomplete. Expertise in this area means understanding that the number is a variable.

39 Books: The Hebrew Bible and the Protestant Old Testament.
46 Books: The Catholic Old Testament.
Up to 49 Books: The Eastern Orthodox Old Testament.

This contextual framework is not just an academic detail; it’s a necessary element for accurate communication in theological and historical discussions. Therefore, always specify which canon you are referencing to ensure clarity and authority in your answer.

Your Top Questions About Old Testament Canons Answered

Q1. Why do Protestants call the extra books ‘Apocrypha’?

Protestants refer to the seven books included in the Catholic Old Testament (the Deuterocanon) as the Apocrypha. This term literally means ‘hidden things’ or ’things concealed’. The primary reason for this classification is that these books were not part of the original, recognized Hebrew canon, which the Protestant Reformers adopted for their own Old Testament. Historically, their divine authority and canonicity were subjects of intense debate among Jewish and Christian scholars. By calling them Apocrypha, Protestant tradition signals that while the books may hold historical or literary value, they do not carry the same authoritative weight as the 39 books of the accepted canon. This distinction is rooted in the long-standing tradition established by scholars such as Jerome, whose influential Latin Vulgate Bible separated these books from the rest of the text.

Q2. Is the order of the Old Testament books chronological?

No, the current Christian ordering is thematic, not strictly chronological. While the books of Law (Genesis through Deuteronomy) and much of the Historical section do follow a narrative timeline, the overall arrangement is based on genre and theological themes. For instance, the placement of the major and minor Prophets is at the end of the canon, even though many of them wrote their messages during the historical periods covered in the books of Kings and Chronicles. The composition of the books, particularly the poetic and prophetic works, often overlaps and varies greatly, making a strictly chronological reading difficult. This thematic structure—moving from Law to History, then to Poetry/Wisdom, and concluding with Prophecy—is designed to guide the reader through the foundational relationship between God and humanity, culminating in messianic hope.

Q3. Who decided which books should be included in the Old Testament?

The inclusion of books into the Old Testament canon was a gradual, organic process that unfolded over many centuries, rather than a single event decided by one person or council. The texts were affirmed by a combination of widespread usage, internal spiritual authority, and recognition by religious leaders. The Law (Torah) was accepted first. The Prophets were affirmed over time as their writings gained recognition and authority among the Jewish community. Finally, the Writings (Psalms, Proverbs, etc.) were collected and accepted. While there was a consensus reached among Jewish scribes in the first century CE that confirmed the 39 books (the Tanakh), the Christian church later inherited and adapted this list, leading to the different counts. The final formal affirmation of the 46-book canon within the Catholic tradition, for example, did not occur until the Council of Trent in the 16th century, demonstrating the long historical arc of this process.

Final Takeaways: Mastering the Structure of the Old Testament Scriptures

Summarize 3 Key Actionable Steps for Understanding the Canon Differences

For anyone looking to achieve a thorough understanding of the Old Testament structure, it’s essential to recognize that the answer to “How many books?” is entirely dependent on the religious tradition being referenced. A reliable rule of thumb is to always clarify “Which canon?” before providing a number. The most commonly accepted counts are 39 books for the Protestant canon, 46 books for the Catholic canon, and 24 books for the Hebrew Bible (Tanakh), which are all variations of the same core textual content but grouped and ordered differently. This distinction is the single most important takeaway for mastering this topic. Furthermore, understanding the historical context—such as the Masoretic Text as the basis for the Protestant count, and the Council of Trent’s affirmation of the additional books for the Catholic count—establishes your credibility and deep knowledge of the subject.

What to Do Next for Deeper Study

Now that you have mastered the differences in the canon counts, the most effective path for deeper study is to start your focus with the five books of the Law: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy. These works form the foundational narrative and legal framework—the Torah—that underpins the entirety of the Old Testament and serves as the undisputed basis for all three major traditions (Protestant, Catholic, and Hebrew). By establishing a strong grounding here, your subsequent exploration of the Historical, Poetic, and Prophetic books will be far more contextualized and rewarding.