Octateuch
Encyclopedia
The Octateuch is a traditional name for the eight books of the Bible
Bible
The Bible refers to any one of the collections of the primary religious texts of Judaism and Christianity. There is no common version of the Bible, as the individual books , their contents and their order vary among denominations...

, comprising the Pentateuch, plus the Book of Joshua
Book of Joshua
The Book of Joshua is the sixth book in the Hebrew Bible and of the Old Testament. Its 24 chapters tell of the entry of the Israelites into Canaan, their conquest and division of the land under the leadership of Joshua, and of serving God in the land....

, Book of Judges
Book of Judges
The Book of Judges is the seventh book of the Hebrew bible and the Christian Old Testament. Its title describes its contents: it contains the history of Biblical judges, divinely inspired prophets whose direct knowledge of Yahweh allows them to act as decision-makers for the Israelites, as...

and Book of Ruth
Book of Ruth
The Book of Ruth is one of the books of the Hebrew Bible, Tanakh, or Old Testament. In the Jewish canon the Book of Ruth is included in the third division, or the Writings . In the Christian canon the Book of Ruth is placed between Judges and 1 Samuel...

.

These made up the first eight books in a traditional ordering. It does not correspond to that of the Tanakh
Tanakh
The Tanakh is a name used in Judaism for the canon of the Hebrew Bible. The Tanakh is also known as the Masoretic Text or the Miqra. The name is an acronym formed from the initial Hebrew letters of the Masoretic Text's three traditional subdivisions: The Torah , Nevi'im and Ketuvim —hence...

. According to the Jewish Encyclopedia
Jewish Encyclopedia
The Jewish Encyclopedia is an encyclopedia originally published in New York between 1901 and 1906 by Funk and Wagnalls. It contained over 15,000 articles in 12 volumes on the history and then-current state of Judaism and the Jews as of 1901...

,
[the Book of Ruth] is placed in the Septuagint after the Book of Judges; and this order is followed in the Vulgate
Vulgate
The Vulgate is a late 4th-century Latin translation of the Bible. It was largely the work of St. Jerome, who was commissioned by Pope Damasus I in 382 to make a revision of the old Latin translations...

 and in the English translations. In the Hebrew Bible, however, Ruth is found in the "Ketubim," or third part of the canon, where it stands next after the Song of Solomon, being the second of the Five Megillot.
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