Zephaniah 3:8

3:8 Therefore you must wait patiently for me,” says the Lord,

“for the day when I attack and take plunder.

I have decided to gather nations together

and assemble kingdoms,

so I can pour out my fury on them –

all my raging anger.

For the whole earth will be consumed

by my fiery anger.

Zechariah 14:2-4

14:2 For I will gather all the nations against Jerusalem to wage war; the city will be taken, its houses plundered, and the women raped. Then half of the city will go into exile, but the remainder of the people will not be taken away.

14:3 Then the Lord will go to battle and fight against those nations, just as he fought battles in ancient days. 14:4 On that day his feet will stand on the Mount of Olives which lies to the east of Jerusalem, and the Mount of Olives will be split in half from east to west, leaving a great valley. Half the mountain will move northward and the other half southward.

Revelation 16:14

16:14 For they are the spirits of the demons performing signs who go out to the kings of the earth to bring them together for the battle that will take place on the great day of God, the All-Powerful.

Revelation 16:16

16:16 Now the spirits gathered the kings and their armies to the place that is called Armageddon in Hebrew.

Revelation 19:19-21

19:19 Then I saw the beast and the kings of the earth and their armies assembled to do battle with the one who rode the horse and with his army. 19:20 Now the beast was seized, and along with him the false prophet who had performed the signs on his behalf – signs by which he deceived those who had received the mark of the beast and those who worshiped his image. Both of them were thrown alive into the lake of fire burning with sulfur. 19:21 The others were killed by the sword that extended from the mouth of the one who rode the horse, and all the birds gorged themselves with their flesh.

Revelation 20:8

20:8 and will go out to deceive the nations at the four corners of the earth, Gog and Magog, to bring them together for the battle. They are as numerous as the grains of sand in the sea.