'War' in the Bible

Come on, let us deal wisely with them, lest they multiply, and it come to pass that, if war occur, they take side with our enemies and fight against us, and go up out of the land.

Jehovah is a man of war; Jehovah, his name.

And he said, For the hand is on the throne of Jah; Jehovah will have war with Amalek from generation to generation!

And Joshua heard the noise of the people as they shouted, and said to Moses, There is a shout of war in the camp.