Say there’s money sitting there, and it’s not yours but no one is looking; why not grab it? Virtue ethics, with its emphasis on the actor, would answer: because you are a better person than that, because you’ll have to live with yourself afterward, etc. Deontology, with its emphasis on the act: because it’s not okay to steal. Consequentialism, with its emphasis on the outcome: what if everyone started acting that way, think about the impact on the person whose money you’ve stolen, etc.