Q: Passage: In Judaism and Christianity, its authorship is attributed to a prophet who lived in the Assyrian Period and named himself in the first verse, Obadiah. His name means "servant of Yahweh".

Question: Based on this passage, who wrote the book of obadiah in the bible?
Let's give stream of consciousness below

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The relevant information is: In Judaism and Christianity, its authorship is attributed to a prophet who lived in the Assyrian Period and named himself in the first verse, Obadiah. So the answer is Obadiah.