The Masoretic Text is the authoritative Hebrew text of the Tanakh for Rabbinic Judaism. However, contemporary scholars seeking to understand the history of the Hebrew Bible’s text use a range of other sources including Greek and Syriac translations, quotations from rabbinic manuscripts, the Samaritan Pentateuch and others. Many of these are older than the Masoretic text and in some instances, contradict it. While the Masoretic Text defines the books of the Jewish canon, it also defines the precise letter-text of these biblical books, with their vocalization and accentuation known as the Masorah.  The Masoretic Text is widely used as the basis for translations of the Old Testament in Protestant Bibles, and in recent years (since 1943) also for some Catholic Bibles. The Dead Sea Scrolls have shown the Masoretic Text to be nearly identical to some texts of the Tanakh dating from 200 BCE. The Masoretic Text was primarily copied, edited and distributed by a group of Jews known as the Masoretes between the 7th and 10th centuries CE. Though the consonants differ little from the text generally accepted in the early 2nd century (and also differ little from some Qumran texts that are even older), it has numerous differences of both greater and lesser significance when compared to (extant 4th century) manuscripts of the Septuagint, a Greek translation (made in the 3rd to 2nd centuries BCE) of the Hebrew Scriptures that was in popular use in Egypt and Israel (and that is often quoted in the New Testament, especially by the Apostle Paul). The oldest extant manuscripts of the Masoretic Text date from approximately the 9th century CE, and the Aleppo Codex (once the oldest complete copy of the Masoretic Text, but now missing its Torah section) dates from the 10th century.