Though the book of Obadiah lays out the specifics of Edom's evil actions, Edom is not alone the only guilty nation. Edom serves as an image for how God will bring down all arrogant and violent nations.
Through Obadiah, God declared judgment over Edom and prophesied their erasure from history. Babylon overtook Edom 100 years after Obadiah, and they never recovered.
Edom Will Fall
The book of Obadiah is the shortest account in the Hebrew Bible. It’s a warning against the nation of Edom, who rebelled against God and enslaved the Israelites.