"Obadiah" means " Worshiper of Yahweh (God)" or " Servant of Yahweh." It is the name of the writer of the book.
The vision of Obadiah.
This is what the Sovereign Lord says about Edom—
We have heard a message from the Lord:
An envoy was sent to the nations to say,
“Rise, let us go against her for battle”— Obadiah 1:1