The Book of Obadiah is a short but powerful prophecy that primarily focuses on Edom's pride, violence, and betrayal towards their brother nation, Israel. The book highlights the principle that God judges nations based on their actions, including their treatment of others. While the book contains warnings of judgment against Edom, it also offers hope and assurance of Israel's ultimate restoration and the triumph of God's righteous kingdom. The prophecy ends with a vision of God's sovereignty and the establishment of His reign over all nations.