A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown [1882] at sacred-texts.com
JEROME makes him contemporary with Hosea, Joel, and Amos. It is an argument in favor of this view that Jeremiah would be more likely to insert in his prophecies a portion from a preceding prophet than from a contemporary. If so, the allusion in Oba 1:11-14 will be to one of the former captures of Jerusalem: by the Egyptians under Rehoboam (Kg1 14:25-26; Ch2 12:2, &c.), or that by the Philistines and Arabians in the reign of Joram (Ch2 21:16-17); or that by Joash, king of Israel, in the reign of Amaziah (Ch2 25:22-23); or that in the reign of Jehoiakim (Kg2 24:1, &c.); or that in the reign of Jehoiachin (Kg2 24:8-16). On all occasions the Idumeans were hostile to the Jews; and the terms in which that enmity is characterized are not stronger in Obadiah than in Joe 3:19 (compare Oba 1:10; Amo 1:11-12). The probable capture of Jerusalem alluded to by Obadiah is that by Joash and the Israelites in the reign of Amaziah. For as, a little before, in the reign of the same Amaziah, the Jews had treated harshly the Edomites after conquering them in battle (Ch2 25:11-23), it is probable that the Edomites, in revenge, joined the Israelites in the attack on Jerusalem [JAEGER].
This book may be divided into two parts: (1) Oba 1:1-6 set forth Edom's violence toward his brother Israel in the day of the latter's distress, and his coming destruction with the rest of the foes of Judah; (2) Oba 1:17-21, the coming re-establishment of the Jews in their own possessions, to which shall be added those of the neighboring peoples, and especially those of Edom.