'War' in the Bible

And yesterday My people for an enemy doth raise himself up, From the outer garment the honourable ornament ye strip off, From the confident passers by, Ye who are turning back from war.

Thus said Jehovah concerning the prophets Who are causing My people to err, Who are biting with their teeth, And have cried 'Peace,' And he who doth not give unto their mouth, They have sanctified against him war.

And He hath judged between many peoples, And given a decision to mighty nations afar off, They have beaten their swords to ploughshares, And their spears to pruning-hooks, Nation lifteth not up sword unto nation, Nor do they learn war any more.