This book relates the story of Tobit, a righteous Israelite from the tribe of Naphtali. He lived in Nineveh during the time when Israel had been deported to Assyria (721 B.C). Tobit was written originally in Aramaic, perhaps in Hebrew. It was included in the Septuagint (Greek) Bible and can be found in Catholic and Orthodox Bibles. (summary by ancientchristian)