Question: Against which people did the book of Obadiah prophesy?
Comments: Obadiah is the shortest book in the Old Testament, comprised of only 21 verses over one chapter. The entire book prophesies the destruction of Edom. Verses 1-9 predict the humbling of Edom, verses 10-14 explain the reason, and verses 15-21 tell of the restoration of Israel and elimination of the Edomites on the forthcoming day of the Lord.
The vision of Obadiah.
Thus says the Lord GOD concerning Edom--
We have heard a report from the LORD,
And an envoy has been sent among the nations saying,
"Arise and let us go against her for battle"-- (Obadiah 1:1, NASB)
Note: This miniature on vellum of Obadiah was done by an unknown Flemish master in the fifteenth century.