'War' in the Bible

“Recently My people have arisen as an enemy—You strip the robe off the garmentFrom unsuspecting passers-by,From those returned from war.

Thus says the Lord concerning the prophets who lead my people astray;When they have something to bite with their teeth,They cry, “Peace,”But against him who puts nothing in their mouthsThey declare holy war.

And He will judge between many peoplesAnd render decisions for mighty, distant nations.Then they will hammer their swords into plowsharesAnd their spears into pruning hooks;Nation will not lift up sword against nation,And never again will they train for war.