Whatever we are going through can feel like it will last for the rest of our lives, without escape. Sometimes, some aspect of that really is true. But so much more often, now is only now, the middle of the story, and what the Lord has in store is unknown.
The Psalmist speaks from the Judean perspective, first in concert with fellow Judeans, then alone, as the Psalmist, then finally as a prayer from Judeans to God, going through each of the five stages of grief over the loss of Jerusalem, and the betrayal of Edom.
Thus says the Lord God concerning Edom, seems to be a technical phrase—what this vision contains cannot be altered, for it was delivered by God Almighty, and is not up for revision or debate.
The final meeting between Edom and Israel happened when the many greats grandson of Esau, King Herod had before him the many greats grandson of Jacob, Jesus Christ.
Some theologians tentatively place Obadiah during the reign of Jehoram, in 848-841 BC, Jewish scholars place Obadiah, Habakkuk and Zephaniah as contemporaries of Jeremiah and Ezekiel
The way Amos chose to depict himself was as a simple man minding his own business, tending to his farm and family, when God came barreling in with an urgent message