Edom, and Idumaea, is the southeastern border of the promised land – it’s just below Moab. Esau and Jacob were given the lands through palestine and idumea for their inheritance – but they exchanged their inherited lands for the bowl of lentils… Esau preferred to hunt, in any event, and the hill country of Idumea suited him better.
The Brittanica article, however, appears to say the word Edom from which Herod Antipater came (my mistake for calling him antipas…) was southwest between the salt/dead sea and the gulf next to Egypt. I think that may be a more modern title as that’s not the Geography of Edom of the old testament esp. at the time of Balaam.
I think your memory is quite good. Ezekiel, is in the Babylonian captivity, and would reflect on the way Edom treated israel when Babylon came to conquer them.
Seir is the main city mentioned in all the curses against historical Edom, eg: Isaiah, etc. So the prophecy in Ezekiel is consistent.
Herod the Great, according to the article you linked (thanks, that was very helpful) was not from Idumea, it says : “Herod was born in southern Palestine”
His father – Antipater married a woman taken from Petra (southwest border) not Edom proper – and if Antipater was already a king; it was as a Roman appointee over the promised land.
It’s hard to imagine Herod the Great, then, was Edomite except by association with his father.
Edom was varously in favor and out of favor with Israel throughout history.
Esau himself was never banned from coming into the promised land (in spite, and contradiction to predestination arguments taken from St. Paul out of context); and Esau’s children often were on friendly terms with Israel allowing Garrisons of Israel to be stationed there.
I think your memory is fine; I seem to have about as good a one when it comes to remembering things from Cavins, Hahan, etc.
Historically, though,…
At the time of Balaam – perhaps remembering the bad terms Esau and Jacob parted on; (Jacob did do Esau wrong…) Edom refused safe passage of the Israelites into their land (which was extorted from Esau).
That breach of brotherly tolerance – was what brought on the curse in Numbers 24.
At times, Edom was suppressed by Israel. However, I don’t recall any history ever indicating that Edom was crushed by Israel after the time of Christ. It seems to me, more likely, that if the prophecy of Ezekiel were fulfilled at all – that it had to be in the times of the Maccabees or immediately upon return from Babylon. (Otherwise, it can only be an anachronistic repetition of an older prophecy / apocalyptic out of anger… but which wouldn’t be fulfilled in the future)
Some historians deny that Edom was ever ruled by Israel; and I am not sure how the scriptural references are reconciled.
Herod the Great (of Jesus’ birth time), though, was more or less insane with power lust and fear. Even if the prophecy were already fulfilled, his Father’s potential link to historical Edom (even if he were born technically out of biblical Edom…

) would easily have swayed him to massacre anyone to protect his throne. His paranoia was often exploited to destroy even his own wife and children, let alone people he didn’t love.