Jesaja 34:6

6 Het zwaard des HEEREN is vol van bloed, het is vet geworden van smeer, van het bloed der lammeren en der bokken, van het smeer der nieren van de rammen; want de HEERE heeft een slachtoffer te Bozra, en een grote slachting in het land der Edomieten.

Jesaja 34:6 Meaning and Commentary

Isaiah 34:6

The sword of the Lord is filled with blood
Multitudes being slain by it; the "Lord" here is that divine Person that is described as a warrior, as a General of an army, with a sharp sword, by whom many are slain, such a number as that it is filled with the blood of them, ( Revelation 19:11-16 Revelation 19:21 ) : it is made fat with fatness:
not only filled with the blood, but fattened by it; the allusion is to ravenous creatures gorged and sated with the blood of others, and thereby made fat; perhaps this may refer to Christian princes, the sword in the hand of the Lord, who shall be enriched with the plunder and spoil of the antichristian states: [and] with the blood of lambs and goats, with the fat of the
kidneys of rams.
The Targum is,

``with the blood of kings and governors, with the fat of the kidneys princes;''
and Jarchi interprets them, of princes and rulers; but rather the common people are designed, or the common soldiers in the army, or however the inferior officers of it; kings, princes, and generals, being intended in the following verse ( Isaiah 34:7 ) . It denotes the great carnage of all sorts and ranks of men made at this time, and which is described in ( Revelation 19:18 ) : for the Lord hath a sacrifice in Bozrah, and a great slaughter in
the land of Idumea:
there seems to be two Bozrahs the Scripture speaks of, the one in Moab, ( Jeremiah 48:24 ) and another in Edom, ( Isaiah 63:1 ) which is here meant, and was a chief city of the Edomites, and signifies a fortress, being no doubt a place well fortified; this is the Bostra of Ptolemy F11, and which he places in Arabia Petraea. Aben Ezra says that some interpret it of Constantinople, the metropolis of the Ottoman empire; but it is best to understand it of Rome, as Menasseh ben Israel F12 does, and Idumea of the whole Roman jurisdiction; Rome being the chief city of the antichristian states, that great city, which John in his Revelation describes as reigning over the kings of the earth; here and in all the antichristian kingdoms will be a great "slaughter" of men, called a "sacrifice" of the Lord, because by his order and direction, and for the honour of his justice, and being acceptable to him; and perhaps there may be an allusion to the blood sacrifices being the Lord's; this slaughter and sacrifice is called the supper of the great God, ( Revelation 19:17 ) .
FOOTNOTES:

F11 Geograph. l. 5. c. 17.
F12 Spes Israelis, sect. 30. p. 91.

Jesaja 34:6 In-Context

4 En al het heir der hemelen zal uitteren, en de hemelen zullen toegerold worden, gelijk een boek, en al hun heir zal afvallen, gelijk een blad van den wijnstok afvalt, en gelijk een vijg afvalt van den vijgeboom.
5 Want Mijn zwaard is dronken geworden in den hemel; ziet, het zal ten oordeel nederdalen op Edom, en op het volk, hetwelk Ik verbannen heb.
6 Het zwaard des HEEREN is vol van bloed, het is vet geworden van smeer, van het bloed der lammeren en der bokken, van het smeer der nieren van de rammen; want de HEERE heeft een slachtoffer te Bozra, en een grote slachting in het land der Edomieten.
7 En de eenhoornen zullen met hen afgaan, en de varren met de stieren; en hun land zal doordronken zijn van het bloed, en hun stof zal van het smeer vet gemaakt worden.
8 Want het zal zijn de dag der wraak des HEEREN, een jaar der vergeldingen, om Sions twistzaak.
The Dutch Staten Vertaling translation is in the public domain.