Jesus Christ finishes destroying the beast (Antichrist) and his kingdom in the Battle of Armageddon. This is a war between the kings of the earth and their armies, and Jesus Christ and His army.
And I saw the beast, and the kings of the earth, and their armies, gathered together to make war against him that sat on the horse, and against his army. (Revelation 19:19)
Antichrist and The False Prophet will be thrown into the lake of fire.
And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone. (Revelation 19:20)
I beheld then because of the voice of the great words which the horn spake: I beheld [even] till the beast was slain, and his body destroyed, and given to the burning flame. (Daniel 7:11)
And he shall plant the tabernacles of his palace between the seas in the glorious holy mountain; yet he shall come to his end, and none shall help him. (Daniel 11:45)
And through his policy also he shall cause craft to prosper in his hand; and he shall magnify [himself] in his heart, and by peace shall destroy many: he shall also stand up against the Prince of princes; but he shall be broken without hand. (Daniel 8:25)
And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming: (2 Thessalonians 2:8)
The rest of Antichrist’s armies will be slain with the sword.
And the remnant were slain with the sword of him that sat upon the horse, which [sword] proceeded out of his mouth: and all the fowls were filled with their flesh. (Revelation 19:21)
Jerusalem will become a cup of trembling to all the nations.
Behold, I will make Jerusalem a cup of trembling unto all the people round about, when they shall be in the siege both against Judah [and] against Jerusalem. And in that day will I make Jerusalem a burdensome stone for all people: all that burden themselves with it shall be cut in pieces, though all the people of the earth be gathered together against it. In that day, saith the LORD, I will smite every horse with astonishment, and his rider with madness: and I will open mine eyes upon the house of Judah, and will smite every horse of the people with blindness. And the governors of Judah shall say in their heart, The inhabitants of Jerusalem [shall be] my strength in the LORD of hosts their God. In that day will I make the governors of Judah like an hearth of fire among the wood, and like a torch of fire in a sheaf; and they shall devour all the people round about, on the right hand and on the left: and Jerusalem shall be inhabited again in her own place, [even] in Jerusalem. (Zechariah 12:2-6)
And this shall be the plague wherewith the LORD will smite all the people that have fought against Jerusalem; Their flesh shall consume away while they stand upon their feet, and their eyes shall consume away in their holes, and their tongue shall consume away in their mouth. And it shall come to pass in that day, [that] a great tumult from the LORD shall be among them; and they shall lay hold every one on the hand of his neighbour, and his hand shall rise up against the hand of his neighbour. And Judah also shall fight at Jerusalem; and the wealth of all the heathen round about shall be gathered together, gold, and silver, and apparel, in great abundance. And so shall be the plague of the horse, of the mule, of the camel, and of the ass, and of all the beasts that shall be in these tents, as this plague. (Zechariah 14:12-15)
And I will call for a sword against him throughout all my mountains, saith the Lord GOD: every man’s sword shall be against his brother. (Ezekiel 38:21)
And to you who are troubled rest with us, when the Lord Jesus shall be revealed from heaven with his mighty angels, In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ: Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power; When he shall come to be glorified in his saints, and to be admired in all them that believe (because our testimony among you was believed) in that day. (2 Thessalonians 1:7-10)
The slaughter will be so great that birds and beasts will be gathered.
And I saw an angel standing in the sun; and he cried with a loud voice, saying to all the fowls that fly in the midst of heaven, Come and gather yourselves together unto the supper of the great God; That ye may eat the flesh of kings, and the flesh of captains, and the flesh of mighty men, and the flesh of horses, and of them that sit on them, and the flesh of all [men, both] free and bond, both small and great. (Revelation 19:17-18)
And, thou son of man, thus saith the Lord GOD; Speak unto every feathered fowl, and to every beast of the field, Assemble yourselves, and come; gather yourselves on every side to my sacrifice that I do sacrifice for you, [even] a great sacrifice upon the mountains of Israel, that ye may eat flesh, and drink blood. Ye shall eat the flesh of the mighty, and drink the blood of the princes of the earth, of rams, of lambs, and of goats, of bullocks, all of them fatlings of Bashan. And ye shall eat fat till ye be full, and drink blood till ye be drunken, of my sacrifice which I have sacrificed for you. Thus ye shall be filled at my table with horses and chariots, with mighty men, and with all men of war, saith the Lord GOD. (Ezekiel 39:17-20)
For wheresoever the carcase is, there will the eagles be gathered together. (Matthew 24:28)
And they answered and said unto him, Where, Lord? And he said unto them, Wheresoever the body [is], thither will the eagles be gathered together. (Luke 17:37)