6.2 The Structure of the Bible:
Books, Genres, and Testaments
As previously discussed, the Bible is divided into two major sections: the Old Testament and the New Testament.
Different Christian traditions do not all use exactly the same collection of biblical books.
Most Protestant Bibles contain 66 books: 39 books in the Old Testament and 27 books in the New Testament.
The Catholic Bible contains 73 books. In addition to the books found in Protestant Bibles, it includes several books that Catholics regard as part of the Old Testament.
Eastern Orthodox churches generally include even more books, though the exact contents can vary somewhat between Orthodox traditions.
The books of the Bible are typically not organized in the chronological order of when they happened or when they were written. Instead, they are grouped by literary styles—such as history, poetry, and letters. Its books are grouped into larger collections that help readers navigate its contents.
Chapters were not added until the 13th century. Verses were introduced in the 16th century. They were created purely as a navigation system to help people find specific sentences.
The Structure of the Old Testament
The Old Testament contains writings associated with ancient Israel. It was originally written in Hebrew and Aramaic and is traditionally organized into four major categories.
1. The Law
The first five books of the Bible—Genesis, Exodus, Leviticus, Numbers, and Deuteronomy—are often called the Five Books of Moses, the Law, the Torah, or the Pentateuch.
These books describe creation, the patriarchs, Israel’s origins, the Exodus from Egypt, God’s covenant with Israel, and the giving of the Law.
2. Historical Books
The historical books continue Israel’s story through the conquest of Canaan, the period of the judges, the rise of kings such as Saul, David, and Solomon, the division of the kingdom, exile, and return.
3. Wisdom and Poetry
Books such as Job, Psalms, Proverbs, Ecclesiastes, and Song of Songs are often grouped together as wisdom and poetic literature.
These books explore worship, suffering, morality, love, wisdom, and the meaning of life.
The longest book in the Bible is Psalms, which contains 150 individual poems and songs.
4. The Prophets
The prophetic books contain messages associated with figures such as Isaiah, Jeremiah, Ezekiel, Daniel, Hosea, Amos, Jonah, and many others.
The prophetic books are further categorized as major prophets (like Isaiah) or minor prophets (like Hosea). This label only reflects the length of the scroll they wrote, not how important their message was.
The prophets warned against injustice, called people to repentance, announced judgment, and offered hope for the future.
These categories provide a useful framework for understanding the major themes and purposes of the Old Testament.
The Structure of the New Testament
The New Testament was originally written in Koine Greek is usually organized into four major categories.
1. The Gospels
Matthew, Mark, Luke, and John are known as the Gospels.
They describe the life, teachings, death, and resurrection of Jesus Christ.
Although they share many of the same events, each Gospel presents Jesus from a somewhat different perspective and for a somewhat different audience.
2. Acts
The Book of Acts describes the growth of the early Christian movement after Jesus’ resurrection and ascension.
It focuses especially on the ministries of Peter and Paul and the spread of Christianity throughout the Roman world.
3. The Epistles
Much of the New Testament consists of letters, often called epistles.
These letters were written to churches, Christian communities, or individual believers.
They address theology, ethics, worship, church leadership, conflict, and practical Christian living.
The Epistles written by the Apostle Paul are traditionally organized from longest to shortest, starting with Romans and ending with Philemon, rather than by the date he wrote them.
The shortest book of the Bible is 3 John (often pronounced “third John” not “three John”) and consists of 14 verses.
4. Revelation
The final book of the New Testament is Revelation.
It uses vivid imagery, symbolism, and visions to describe spiritual realities, divine judgment, and future hope.
Because of its highly symbolic language, Revelation has produced some of the most diverse interpretations in Christian history.
Why Literary Genre Matters
One reason people sometimes find the Bible difficult to read is that it contains many different types of literature.
A poem should not necessarily be read the same way as a law code.
A proverb serves a different purpose than a historical narrative.
A personal letter communicates differently than an apocalyptic vision.
For this reason, understanding genre is important when it comes to biblical interpretation. Recognizing whether a passage is history, poetry, wisdom literature, prophecy, a letter, or symbolic vision often helps readers better understand what the author intended to communicate. This principle will become especially important later in the series when we discuss interpretation and why Christians sometimes disagree about the meaning of biblical passages.
Conclusion
The Bible is organized into a number of major collections that help readers navigate its contents.
The Old Testament contains law, history, wisdom literature, and prophetic writings associated with ancient Israel.
The New Testament contains the Gospels, Acts, letters, and Revelation, all centered on Jesus Christ and the early Christian movement.
Understanding this overall structure provides a roadmap of the Bible and prepares us to look more closely at the Old Testament.
In section 6.3, we will take a closer look at the Old Testament and its major themes of Israel, covenant, law, prophets, and wisdom.