The vision, which the prophet received immediately from the Lord; so prophets are called seers, 1 Samuel 9:9 Amos 7:12; and their prophecy is vision, Isaiah 1:1 Joel 2:28 .
Of Obadiah: who this was appears not on any certainty, or when he prophesied. That it was not Obadiah who hid and fed the prophets of the Lord in Ahab's time is evident, for that the prophet doth threaten Edom for their cruelty against Jerusalem in the day it was taken and sacked, which was three hundred and thirty or forty years after Ahab's time; he began to reign about A.M. 3025, and Jerusalem was sacked about 3363. His name speaks a servant or a worshipper of the Lord.
Thus saith the Lord God: this includes his authority, the certainty of the things he speaks of concerning Edom, or against Edom; both people and country are so called from their progenitor or founder, Esau, called Edom, Genesis 25:30 . This country is called Idumea, Isaiah 34:5,6 Eze 35:15, which see; it was a part of Arabia Petrea.
We have heard; other prophets, as I, have heard this news to tell to Edom, or to send to them, Isaiah 11:14 Jeremiah 27:3 Joel 3:19 Amos 1:12 .
A rumour; not an uncertain and vain report, but it comes from God by his prophets.
An ambassador, a herald, or muster-master, who should gather forces together for this expedition, is sent, by the Lord first, and next by Nebuchadnezzar, who executed on Edom what is here foretold. God stirred up the spirit of Nebuchadnezzar to make war on Edom, which was (as well as other nations) given up to Nebuchadnezzar, Jeremiah 27:3,6.
Among the heathen, or nations, both those that were confederate with or subject to Nebuchadnezzar, whom all nations served, Jeremiah 27:6,7.
Arise ye: this is a summons to them from Nebuchadnezzar, that they send in their proportions of soldiers.
Let us rise up against her in battle: this seems the voice of soldiers willing to and desirous of the war.