'War' in the Bible

Come, let us deal shrewdly with them, so that they will not multiply and in the event of war, join our enemies, and fight against us and escape from the land.”

So it happened, when Pharaoh let the people go, God did not lead them by way of the land of the Philistines, even though it was nearer; for God said, “The people might change their minds when they see war [that is, that there will be war], and return to Egypt.”

“The Lord is a warrior;The Lord is His name.

saying, “The Lord has sworn [an oath]; the Lord will have war against [the people of] Amalek from generation to generation.”

Now when Joshua heard the noise of the people as they shouted, he said to Moses, “There is a sound of battle in the camp.”