According to Wiki Answers, "the Bible is the oldest book in the world" (here). Thus, as indicated in this Huffington Post article, the oldest book in the world must undoubtedly be the Gutenberg Bible (the earliest printed book in the West, from around 1455) or Buddhism's Diamond Sutra (the oldest printed book in the East, from around 868).
However, the dating of the text itself isn't clear-cut. The New Testament was not originally written in its present form; rather, it was based on what we call the "Pauline Epistles" (i.e., 1 & 2 Timothy, Titus, and Philemon), which were probably written between 60 and 70 AD. Also, the Old Testament has many more books included in later versions than in early versions such as those found in the Dead Sea Scrolls. Finally, recent discoveries have shown that some documents that were once thought to be part of the Bible aren't actually found within it. One example is Jubilee, a collection of laws that was apparently used by several ancient civilizations including the Egyptians and the Babylonians.
Thus, the Bible is an important document that has had a tremendous impact on society but saying that it is "the oldest book in the world" is not quite accurate.
Unsurprisingly, the earliest book in the Bible is located in the Old Testament. Given that it describes the creation of the universe, most Christians would guess that Genesis is the earliest book in the Bible. The Book of Job is thought to have been written between 1900 and 1700 B.C. during the time of the Patriarchs. It contains a poetic narrative about a righteous man who suffers greatly from God while an evil ruler enjoys prosperity.
Genesis was probably written by more than one author over a long period of time. The first part of the book (chs. 1-11) may have been written by someone named Adam, while the last part (chs. 12-50) may have been written by another person named Abraham. These two men were not identical; they were probably prophets who lived around the same time but in different places. They may even have been cousins!
In addition to being a writer, Adam was also likely a historical person who lived in the region now known as Iran. He is believed to have been the first human being created by God when he was asked by God to rule over his own kind. According to the Book of Genesis, Adam had no siblings and no parents. Instead, he was given authority over all other living things.
After creating Adam, God decided to give him a companion who would help him rule over the earth. So God made woman out of Adam's side and she became a symbol of life and innocence.
Here Are Some of the World's Oldest Surviving Books.
The Gutenberg Bible, also known as the 42-line Bible or Mazarin Bible, is the oldest complete book existent in the Western world and one of the earliest printed from movable type. It was named after its printer, Johannes Gutenberg, who finished it in approximately 1455 while working in Mainz, Germany. The Bible was reprinted several times before it was replaced by a more modern version in 1611.
The first English-language book printed using moveable type was William Caxton's Golden Legend, or Lives of the Holy Martyrs. Printed around 1450, this edition had the effect of spreading knowledge of the Bible in Europe. In addition, it included poems and stories not found in earlier Bibles, such as Geoffrey Chaucer's "General Prologue" to the Canonical Gospels (now usually called the "General Prologue") and "The Canterbury Tales."
In 1466, William Tyndale published an English translation of the New Testament. This was the first time the entire Bible was available in English. However, since this edition used the King James Version published today, many consider Tyndale's work to be important in establishing that version as part of American culture.
In 1526, Luther posted his 95 Theses on the door of All Saints' Church in Wittenberg, Germany, calling for reforms in the Catholic Church. This act sparked the Protestant Reformation and led to a new era in the printing industry.
Ancient book specialists were able to identify the oldest manuscripts of the New Testament, which were carefully housed in university libraries in England and Egypt, thanks to modern dating procedures. The four earliest New Testament manuscripts are as follows:
The Codex Sinaiticus (345-380) is the original Bible of the Eastern Orthodox Church today. It is a huge manuscript of some 1730 pages, written on parchment. This rare biblical text has been extensively used by scholars because it contains many corrections and alternative readings that can help us understand how the original words of Jesus Christ were expressed.
The Vatican City State (Vatican Library) owns two early New Testament manuscripts: the Bodmer Papyri (400-440) and the Egerton Papyrus (200-240). These manuscripts provide important evidence about the early history of Christianity.
The British Library has three early New Testament manuscripts: the Oxyrhynchus Papyri (400-450), the Elgin Marbles (369-382), and the Ephraim Manuscripts (375-425). These texts reveal fascinating information about the development of the church during its formative years.
There are also early New Testament manuscripts that have survived intact until today.
The Aleppo Codex (about 920 CE) and the Leningrad Codex (around 1008 CE) were previously thought to be the oldest known Hebrew copies of the Tanakh. The discovery of the Dead Sea scrolls at Qumran in 1947 CE moved the Tanakh's textual history back a millennium from such codices. However, recent research has shown that some fragments found near Jerusalem's Old City in 1900 and described as lectionaries from the fourth century BCE are actually early versions of the New Testament books.
In conclusion, the Aleppo Codex is now considered to be about nine centuries old, while the Leningrad Codex is twelve hundred years old.