'War' in the Bible

I was in the Spirit [in special communication with the Holy Spirit and empowered to receive and record the revelation from Jesus Christ] on the Lord’s Day, and I heard behind me a loud voice like the sound of a trumpet,

So repent. If you don't, I will come to you quickly and wage war against them with the sword of my mouth.

After this I looked, and behold, a door standing open in heaven! And the first voice which I had heard, like the sound of a [war] trumpet speaking with me, said, “Come up here, and I will show you what must take place after these things.”

And the likenesses of the locusts were like to horses prepared for war; and upon their heads as crowns like gold, and their faces as faces of men;

and they had breastplates as breastplates of iron, and the sound of their wings was as the sound of chariots of many horses running to war;

And when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.

And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,

And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ.

And they worshipped the dragon which gave power unto the beast: and they worshipped the beast, saying, Who is like unto the beast? who is able to make war with him?

And there was given to it a mouth speaking great things, and evil-speakings, and there was given to it authority to make war forty-two months,

And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations.

They are demonic spirits that perform signs. They go to the kings of the whole earth and gather them for the war of the great Day of God Almighty.

These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are called, and chosen, and faithful.

And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.

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.

He will go out to deceive Gog and Magog, the nations at the four corners of the earth, and gather them for war. They are as numerous as the sands of the seashore.