[annalex]

The tradition lists six sins against the Holy Ghost:

• Despair
• Presumption
• Impenitence
• Obstinacy
• Resisting Truth
• Envy of spiritual welfare of others.

See, for example, SINS AGAINST THE HOLY SPIRIT

Presumption can be of two kinds. The Pelagian presumption of one's own capacity is the kind we have no dispute about; at issue is the second type of presumption, of salvation regardless of one's actions.

[Alex Murphy]

If despair's a sin, then I've been destined for Hell since I was born....