This is the only mention of the group in the Bible. The number is "seventy" in some manuscripts of the Alexandrian (such as Codex Sinaiticus) and Caesarean text traditions but "seventy-two" in most other Alexandrian and Western texts. It may derive from the seventy nations of Genesis 10 or the many other occurrences of the number seventy in the Bible, or the seventy-two translators of the Septuagint from the Letter of Aristeas. In translating the "Vulgate", Jerome selected the reading of seventy-two.