Isaiah 34:3-4. “Their slain also shall be cast out, and their stink shall come up out of their carcasses, and the mountains shall be melted with their blood. And all the host of heaven shall be dissolved, and the heavens shall be rolled together as a scroll: and all their host shall fall down, as the leaf falleth off from the vine, and as a falling fig from the fig three.”
The death toll will be terrible as Antichrist gathers his armies against Israel, against God Himself. We are told in Ezekiel 39:2, Joel 3, Zech. 14:1-15, and Rev. 19:11-20 that all but a sixth part of the vast armies of the nations under Antichrist will be destroyed in one day as the forces of heaven are hurled against them.
The numbers of the dead will be so vast that it will take Israel seven months to bury them, and in the meantime their bodies will be left in the open. The stench will be be horrible.
The mountains shall be melted with their blood: In Ezekiel 38:17-21, God says that there will be a mighty, destructive earthquake that will bring the mountains to the ground.
Verse 4 refers to the rolling together of the clouds and their moving on as if they had dissolved and passed away, and to the falling of meteors like leaves and figs–something like that under the 6th seal (Rev. 6:12-17). Stars or meteors will fall also at the second advent of Christ (Matt. 24:29-31; Rev. 16:17-23).
These events are not easy to imagine, or to write about. The only way for us to understand them is to understand the full power and sovereignty of God; to understand that He will finally end the evil of Satan and Antichrist, and that in their resistance, they will be destroyed. God will bring all the power of heaven and earth against them, and very few will survive.
Why? Because God will have had enough of the evil and rebellion in the hearts of man.