'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,

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.”

When they have finished their testimony and given their evidence, the beast that comes up out of the abyss (bottomless pit) will wage war with them, and overcome them and kill them.

And war broke out in heaven, Michael [the archangel] and his angels waging war with the dragon. The dragon and his angels fought,

So the dragon was enraged with the woman, and he went off to wage war on the rest of her children (seed), those who keep and obey the commandments of God and have the testimony of Jesus [holding firmly to it and bearing witness to Him].

They fell down and worshiped the dragon because he gave his authority to the beast; they also worshiped the beast, saying, “Who is like (as great as) the beast, and who is able to wage war against him?”

He was also permitted to wage war against the saints (God’s people) and to overcome them, and authority and power over every tribe and people and language and nation.

for they are [actually] the spirits of demons, performing [miraculous] signs. And they go out to the kings of the entire inhabited earth, to gather them together for the war of the great day of God, the Almighty.

They will wage war against the Lamb (Christ), and the Lamb will triumph and conquer them, because He is Lord of lords and King of kings, and those who are with Him and on His side are the called and chosen (elect) and faithful.”

And I saw heaven opened, and behold, a white horse, and He who was riding it is called Faithful and True (trustworthy, loyal, incorruptible, steady), and in righteousness He judges and wages war [on the rebellious nations].

Then I saw the beast and the kings and political leaders of the earth with their armies gathered to make war against Him who is mounted on the [white] horse and against His army.

and will come out to deceive and mislead the nations which are in the four corners of the earth—[including] Gog and Magog—to gather them together for the war; their number is like the sand of the seashore.