Reliability

Jewish tradition has long recognised the wisdom and value of Job, incorporating it into their religious teachings as well the Christians included it in their biblical canon for centuries.

The author of is unknown. Some speculate that the author could be:

• Job - he could have recorded his own story from firsthand experience
• Elihu - his speech is recorded in a lot of detail and this led to believe some that he could have been the author himself
• Moses - due to the book's setting in the patriarchal period
• Solomon - because Solomon was known to collect wisdom literature
• An unknown group of editors - because the complex structure the theological themes suggest potentially skilled multiple contributors

No, bible author directly quoted any scripture from the book of Job. However, both Ezekiel 14:14-20 and James 5:11 refers to Job as a real person and that his story was general knowledge for their audiences.

Manuscript Evidence

Fragments of the Book of Job have been found in Cave 4 and 11 near Qumran as part of the Dead Sea Scrolls. This proofs that the ancient transmission of the text of Job was in circulation among the Jewish communities who were living in that region during the Second Temple period.