The Old Testament contains 39 books in the Protestant tradition — but the order in which they appear in most English-language Bibles is not the order in which they were composed, and it is not the only way these texts have been arranged. The Christian Old Testament organizes books by genre: Law, History, Poetry, and Prophets. The Hebrew Bible arranges the same texts in a three-part structure — Torah, Nevi’im, and Ketuvim — that tells a different story about what these books are and how they relate to each other.
Both arrangements contain the same material. The difference in structure, though, changes what readers encounter first, last, and in between — and with it, the implied meaning of the collection as a whole.
The 39 Books in Canonical Order
The following table lists all 39 Old Testament books as they appear in most Protestant Bibles, alongside the approximate date when scholars believe each text was composed. The gap between canonical position and composition date is often substantial.
| # | Book | Canonical Section | Approx. Composition |
|---|---|---|---|
| 1 | Genesis | Law (Torah) | ~400 BCE (final form) |
| 2 | Exodus | Law (Torah) | ~400 BCE (final form) |
| 3 | Leviticus | Law (Torah) | ~400 BCE (final form) |
| 4 | Numbers | Law (Torah) | ~400 BCE (final form) |
| 5 | Deuteronomy | Law (Torah) | ~620s BCE (core) |
| 6 | Joshua | History | ~550-400 BCE |
| 7 | Judges | History | ~550-400 BCE |
| 8 | Ruth | History | ~450-400 BCE |
| 9 | 1 Samuel | History | ~550-400 BCE |
| 10 | 2 Samuel | History | ~550-400 BCE |
| 11 | 1 Kings | History | ~550-400 BCE |
| 12 | 2 Kings | History | ~550-400 BCE |
| 13 | 1 Chronicles | History | ~350-300 BCE |
| 14 | 2 Chronicles | History | ~350-300 BCE |
| 15 | Ezra | History | ~400-350 BCE |
| 16 | Nehemiah | History | ~400-350 BCE |
| 17 | Esther | History | ~400-200 BCE |
| 18 | Job | Poetry/Wisdom | ~500-400 BCE |
| 19 | Psalms | Poetry/Wisdom | ~400-300 BCE (compilation) |
| 20 | Proverbs | Poetry/Wisdom | ~450-400 BCE (final form) |
| 21 | Ecclesiastes | Poetry/Wisdom | ~300-200 BCE |
| 22 | Song of Solomon | Poetry/Wisdom | ~300s BCE |
| 23 | Isaiah | Prophets | ~740-450 BCE (multiple authors) |
| 24 | Jeremiah | Prophets | ~626-580 BCE |
| 25 | Lamentations | Prophets | ~586-550 BCE |
| 26 | Ezekiel | Prophets | ~593-571 BCE |
| 27 | Daniel | Prophets | ~165 BCE |
| 28 | Hosea | Prophets | ~750-720 BCE |
| 29 | Joel | Prophets | ~600-500 BCE |
| 30 | Amos | Prophets | ~760-750 BCE |
| 31 | Obadiah | Prophets | ~586-550 BCE |
| 32 | Jonah | Prophets | ~450-350 BCE |
| 33 | Micah | Prophets | ~735-700 BCE |
| 34 | Nahum | Prophets | ~612 BCE |
| 35 | Habakkuk | Prophets | ~600 BCE |
| 36 | Zephaniah | Prophets | ~630-620 BCE |
| 37 | Haggai | Prophets | ~520 BCE |
| 38 | Zechariah | Prophets | ~520-300s BCE (multiple authors) |
| 39 | Malachi | Prophets | ~500-450 BCE |
The composition dates reveal patterns the canonical order obscures. Daniel appears among the Prophets in Christian Bibles, positioned alongside texts from the 8th through 5th centuries BCE — but scholars date Daniel to approximately 165 BCE, making it one of the last Old Testament books composed. The Psalms, placed in the Poetry section as if they were a single work, are actually a compilation spanning centuries, with individual psalms dating from as early as the pre-exilic period through the Hellenistic era. As James Kugel has observed, the Psalter is better understood as an anthology within an anthology.
The Hebrew Bible’s Tripartite Structure
The Hebrew Bible — the Tanakh — arranges the same 39 books (counted as 24 in the Jewish tradition, since books like 1-2 Samuel are combined) in a fundamentally different structure: Torah, Nevi’im (Prophets), and Ketuvim (Writings).
This three-part division is not just organizational. It reflects the historical stages by which different texts achieved authoritative status in Jewish communities. The Torah was the first section to be treated as canonical, likely by the 5th century BCE. The Nevi’im achieved recognized status by roughly the 2nd century BCE. The Ketuvim remained the most loosely defined section well into the Common Era — which is why books like Ecclesiastes and Song of Solomon generated debate among rabbis about whether they “defile the hands” (a technical term for canonical status) as late as the 2nd century CE.
The practical differences are significant.
Daniel is placed among the Prophets in Christian Bibles but in the Ketuvim (Writings) in the Hebrew Bible. This reflects the Jewish tradition’s understanding that Daniel, despite containing visions and apocalyptic imagery, was composed too late to be included among the classical prophets.
Ruth appears after Judges in the Christian Old Testament, creating a narrative bridge between the period of the judges and the monarchy (Ruth’s great-grandson is David). In the Hebrew Bible, Ruth sits in the Ketuvim — grouped with the five Megillot (festival scrolls) read on specific Jewish holidays rather than positioned by narrative chronology.
The ending is different. The Christian Old Testament ends with Malachi, whose closing verses speak of a messenger who will come — a natural bridge to the New Testament. The Hebrew Bible ends with 2 Chronicles, which concludes with Cyrus of Persia declaring, “Let him go up” — a call to return to Jerusalem. Same books, but the final word of each collection implies a very different story about what comes next.
Marvin Sweeney, a scholar of Hebrew Bible structure, has argued that these ordering differences are not incidental but reflect fundamentally different theological programs. The Christian arrangement creates a narrative of promise and fulfillment. The Jewish arrangement creates a story of instruction, prophecy, and communal response.
The Count Depends on the Tradition
The number 39 represents the Protestant Old Testament. Other Christian traditions include additional texts.
The Catholic Old Testament contains 46 books, incorporating seven deuterocanonical texts composed during the Second Temple period: Tobit, Judith, Wisdom of Solomon, Sirach (Ecclesiasticus), Baruch, and 1-2 Maccabees. These texts were part of the Septuagint — the Greek translation of the Hebrew scriptures widely used by early Christian communities — but were not included in the Masoretic Text that became standard in Jewish tradition. For more on these texts and why some Bibles include them, see How Many Books Are in the Old Testament? and What Are the 14 Books of the Apocrypha?.
The Orthodox traditions include more still. The Greek Orthodox canon adds 3 Maccabees, Psalm 151, and the Prayer of Manasseh. The Ethiopian Orthodox tradition — one of the oldest continuous Christian traditions — has the largest canon of any Christian church.
The boundaries of the Old Testament have never been universal. They are the product of centuries of community decisions about which texts to use, copy, and teach.
The canonical order groups books by genre and tradition. Uncanon uses compositional order — arranging texts by when scholars believe they were composed. This reveals how ideas developed over time, from the earliest prophetic oracles through the Hellenistic period. Explore the compositional approach.
Why the Order Matters
Reading the Old Testament in canonical order creates one experience: a narrative arc from creation through the patriarchs, exodus, monarchy, exile, and prophetic expectation. Reading in composition order creates a very different experience: you begin with the social criticism of Amos and Hosea in the 8th century BCE, encounter the crisis literature of the exile, watch the Torah being compiled centuries after the events it describes, and end with the apocalyptic visions of Daniel in the 2nd century BCE.
The order shapes how you understand the relationship between texts. In canonical order, the Torah appears as the foundation and the prophets as commentary. In composition order, the prophets come first — the Torah was compiled by communities that had already been shaped by centuries of prophetic critique. That reversal changes what looks like foundation and what looks like response.
For a complete list of all 66 books including the New Testament, see Books of the Bible in Order. For the full composition-order reading sequence, see Bible in Chronological Order.