If you read the Tanach literally, Isaiah 34 is a screed against Edom for touching the apple of his eye. However, the NT authors read those same screeds as prophecy concerning the evil behavior of his People against Christians. In the NT interpretation, the first is last, down is up and up is down. Here are some examples:
[Rev 11:8 NKJV] [8] And their dead bodies [will lie] in the street of the great city which spiritually is called Sodom and Egypt, where also our Lord was crucified.
[Gal 4:21-25 NASB95] [21] Tell me, you who want to be under law, do you not listen to the law? [22] For it is written that Abraham had two sons, one by the bondwoman and one by the free woman. [23] But the son by the bondwoman was born according to the flesh, and the son by the free woman through the promise. [24] This is allegorically speaking, for these [women] are two covenants: one [proceeding] from Mount Sinai bearing children who are to be slaves; she is Hagar. [25] Now this Hagar is Mount Sinai in Arabia and corresponds to the present Jerusalem, for she is in slavery with her children.
[Rev 18:21 NASB95] [21] Then a strong angel took up a stone like a great millstone and threw it into the sea, saying, "So will Babylon, the great city, be thrown down with violence, and will not be found any longer.
Note: "Babylon" is used by Peter as a code word for Jerusalem:
[1Pe 5:13 NASB95] [13] She who is in Babylon, chosen together with you, sends you greetings, and [so does] my son, Mark.
So for the NT authors, the Jews are Cain, whose worship is rejected and Christians are Abel.
So in that light, let's look at the normally overlooked scroll of Obadiah:
https://hermeneutics.stackexchange.com/a/41643/20832
The fundamental idea of Isaiah 34:4-5 is that no matter how exalted Capernaum and then Jerusalem are exalted, ala Babylon, from there down, Capernaum and Jerusalem will be destroyed:
[Mat 11:23 NASB95] [23] "And you, Capernaum, will not be exalted to heaven, will you? You will descend to Hades; for if the miracles had occurred in Sodom which occurred in you, it would have remained to this day.
[Isa 14:12-17 NASB95] [12] "How you have fallen from heaven, O star of the morning, son of the dawn! You have been cut down to the earth, You who have weakened the nations! [13] "But you said in your heart, 'I will ascend to heaven; I will raise my throne above the stars of God, And I will sit on the mount of assembly In the recesses of the north. [14] 'I will ascend above the heights of the clouds; I will make myself like the Most High.' [15] "Nevertheless you will be thrust down to Sheol, To the recesses of the pit. [16] "Those who see you will gaze at you, They will ponder over you, [saying,] 'Is this the man who made the earth tremble, Who shook kingdoms, [17] Who made the world like a wilderness And overthrew its cities, Who did not allow his prisoners to [go] home?'
The intruders into the divine space are slain with the sword of the LORD's armies:
[Eph 6:10-17 NASB95] [10] Finally, be strong in the Lord and in the strength of His might. [11] Put on the full armor of God, so that you will be able to stand firm against the schemes of the devil. [12] For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual [forces] of wickedness in the heavenly [places.] [13] Therefore, take up the full armor of God, so that you will be able to resist in the evil day, and having done everything, to stand firm. [14] Stand firm therefore, HAVING GIRDED YOUR LOINS WITH TRUTH, and HAVING PUT ON THE BREASTPLATE OF RIGHTEOUSNESS, [15] and having shod YOUR FEET WITH THE PREPARATION OF THE GOSPEL OF PEACE; [16] in addition to all, taking up the shield of faith with which you will be able to extinguish all the flaming arrows of the evil [one.] [17] And take THE HELMET OF SALVATION, and the sword of the Spirit, which is the word of God.
The details of the poetic screed in Isaiah 34:4-5 is handled very well by the NKJV:
[Isa 34:5-6 NKJV] [5] "For My sword shall be bathed in heaven; Indeed it shall come down on Edom, And on the people of My curse, for judgment. [6] The sword of the LORD is filled with blood, It is made overflowing with fatness, With the blood of lambs and goats, With the fat of the kidneys of rams. For the LORD has a sacrifice in Bozrah, And a great slaughter in the land of Edom.
It is, from the NT perspective, all about Israel's rebellion against Rome c. 70 AD/CE.
And that's the way the cookie crumbles - Jim Carrey