And I think envy exchange a person for an unsightly person. Envy is a feeling which I don't want to have. So I think envy is the most serious sin. I think Envy is the most serious sin because Envy makes angry oneself without other's knowledge. Gluttony, Sloth, Pride and Covetousness doesn't trouble others.
Anger makes angry oneself with other's knowledge.
In other words, it is raised by other's vice. Therefore, Anger is not so serious sin. I think Lust is the second serious sin. Envy exists in one's world, because I think Envy is the most serious sin. If I murdered someone it is caused by Envy.