What Is the Bible? Old and New Testament Explained Simply

6 min read

Introduction

The Bible is the sacred book of Christians. It brings together 66 books written by about forty authors over roughly fifteen centuries, divided into two main parts: the Old Testament and the New Testament. Christians believe God inspired these writers, and that the Bible tells of his plan to save humanity through Jesus Christ.

The Bible is the most translated and widely distributed book in history. Yet when you open it for the first time, you may feel lost: it is not a novel, and you do not know where to begin. This page explains in simple terms what the Bible is, how it is structured, where its authority comes from in the eyes of Christians, and how to read it without getting discouraged, even if you know nothing about religion.

What Does the Word Bible Mean?

The word comes from the Greek biblia, which means “the books.” This detail helps explain everything: the Bible is not a single text but a small library. You will find history, laws, poetry, songs, proverbs, letters, and accounts of the life of Jesus.

It was written in three languages: Hebrew for most of the Old Testament, a little Aramaic, and Greek for the New Testament. Today it has been translated, at least in part, into several thousand languages.

How Is the Bible Organized?

It contains 66 books: 39 in the Old Testament and 27 in the New. The first tells of creation, the history of the people of Israel, and God's promises. The second tells of the coming of Jesus, the birth of the church, and the hope of his return.

One useful detail: Catholic and Orthodox editions include a few additional books in the Old Testament, called deuterocanonical, meaning “of the second canon.” Protestants do not include them in the Bible. The four Gospels, the Psalms, and Paul's letters are the same for everyone.

Who Wrote the Bible, and Why Is It Called Inspired?

Real people held the pen: a king, shepherds, fishermen, a doctor, prophets. But the Bible claims that God acted through them. Here is what it says about itself.

2 Timothy 3:16-17

"Every Scripture is God-breathed and profitable for teaching, for reproof, for correction, and for instruction in righteousness, that each person who belongs to God may be complete, thoroughly equipped for every good work."

This passage uses the phrase “God-breathed,” which literally means breathed out by God. It adds that Scripture is useful for teaching, correction, and training. The Bible is meant to help people grow, not only to inform them. Read all of 2 Timothy 3.

2 Peter 1:20-21

"knowing this first, that no prophecy of Scripture is of private interpretation. For no prophecy ever came by the will of man: but holy men of God spoke, being moved by the Holy Spirit."

Here the apostle makes clear that the writers did not write according to their own ideas. They spoke moved by the Holy Spirit, the Spirit of God. Yet each one kept his own style and personality. Read all of 2 Peter 1.

John 20:31

"but these are written, that you may believe that Jesus is the Christ, the Son of God, and that believing you may have life in his name."

The author of this Gospel explains his purpose. He does not tell everything; he chooses accounts so that the reader will believe in Jesus and have life. The whole Bible points toward him. Read all of John 20.

Psalm 119:105

"Your word is a lamp to my feet, and a light for my path."

This poet compares God's word to a lamp. It does not light up the whole road at once, but the next step, which is exactly what we need to move forward. Read all of Psalm 119.

Romans 15:4

"For whatever things were written before were written for our learning, that through perseverance and through encouragement of the Scriptures we might have hope."

Paul reminds us that ancient texts were written to teach us. We draw patience, comfort, and hope from them, even though the events they describe happened thousands of years ago. Read all of Romans 15.

Old and New Testament: What Is the Bible About?

Testament means covenant, that is, a solemn commitment between God and humanity. The Old Testament tells of the covenant God made with Israel and prepares for the coming of a savior. The New Testament announces that this promise is fulfilled in Jesus.

In other words, the Bible is not a collection of unrelated stories. It follows one thread: God creates, humanity turns away from him, and God acts to bring it back. Each book takes its meaning from this whole.

Common Misconceptions About the Bible

Some people think you must read it from the first page to the last. That is not the best method: Leviticus and the genealogies would discourage most beginners. It is better to start with a Gospel.

Others believe it fell from heaven ready-made. Christians affirm instead a double origin: divine through inspiration, and human through its authors, their languages, and their history.

Finally, it is sometimes reduced to a set of moral rules. Yet it first tells of a relationship and an offered salvation, before suggesting a way to live.

How Do You Start Reading the Bible?

Choose a translation written in clear, everyday English, or in the language you speak every day. What matters most is understanding what you read.

Begin with the Gospel of John or Mark, then read the Psalms for prayer and Proverbs for wisdom. Only after that, work your way through Genesis and the Acts of the Apostles.

Read a short passage at a time, in a quiet moment. Ask yourself: what does this text say about God, and what does it say about me?

You can also read with others. Talking through a passage together helps you understand it better and keep going.

Further reading

Frequently Asked Questions

How many books are in the Bible?

The Protestant Bible has 66 books: 39 in the Old Testament and 27 in the New. Catholic and Orthodox editions add a few books to the Old Testament, called deuterocanonical. The New Testament is the same for all Christians.

Which book of the Bible should you start with?

The simplest choice is the Gospel of John or Mark, which present the life of Jesus directly. Continue with the Psalms, Proverbs, and the Acts of the Apostles, before tackling the more difficult books of the Old Testament.

Who wrote the Bible?

About forty authors over roughly fifteen centuries: kings such as David, prophets, shepherds, fishermen such as Peter, a doctor such as Luke, and Paul. Christians believe God inspired them while respecting their personalities.

Is the Bible the same for all Christians?

Largely. The New Testament is shared. The differences involve a few books of the Old Testament, which are missing from Protestant Bibles, and how some passages are understood. The central message, Jesus Christ, remains the same.

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What Is the Bible? Old and New Testament Explained Simply | Efficient Church