An anonymous author wrote the Book of Tobit in the early second century b.c. Scholars date its composition to around 200 b.c. Archaeologists uncovered fragments at Qumran containing both Aramaic and Hebrew versions of the text. The document functions as didactic fiction. The writer blends wisdom literature with folklore motifs common in the ancient Near East. The author incorporates the secular Mesopotamian tale of Ahiqar to ground the narrative in a familiar royal court setting.
The narrative establishes a setting in the eighth century b.c. following the Assyrian conquest of Israel in 722 b.c. The plot follows Tobit, an Israelite exiled to Nineveh. Extrabiblical records from Assyrian kings like Shalmaneser V and Sargon II confirm the mass deportations of Israelites during this time. The book itself fails basic historical and geographical tests. The author misidentifies the succession of Assyrian rulers. The text claims the journey from Nineveh to Ecbatana took only two days. The actual distance between these two cities spans roughly 300 miles over rugged mountainous terrain.
The primary storyline features Tobit sending his son Tobias to retrieve silver held in trust in the city of Rages. An angel named Raphael guides Tobias while posing as a human relative. The pair travels to Ecbatana to meet a woman named Sarah. A demon named Asmodeus killed her seven previous husbands on their wedding nights. Tobias uses fish organs to drive the demon away and marries Sarah. The men return to Nineveh where Tobias heals the blindness of his father. The writer uses these plot devices to enforce strict endogamy and fidelity to Jewish law while living among Gentile populations.
The author composed the book to instruct diaspora Jews on maintaining cultural identity under foreign rule. The text emphasizes almsgiving, proper burial of the dead, and dietary restrictions. Rabbinic authorities eventually excluded the book from the Hebrew Bible. The Greek Septuagint preserved the text for later generations. Christian communities integrated the Greek version into their deuterocanonical collections. The book remains a primary historical document for understanding Jewish literary development and cultural anxieties in the Hellenistic period.