"Envy is the painful and oftentimes resentful awareness of an advantage enjoyed by someone else. Sometimes we want that same advantage, leading to the further sin of covetousness. And sometimes we just resent the other person having something we don’t have. But we don’t just envy people in general. Usually, there are two conditions that tempt us to envy. First, we tend to envy those with whom we most closely identify. Second, we tend to envy in them the areas we value most.

Jerry Bridges, Respectable Sins