It's original, maybe, but not good (3)

I believe the answer is:

sin

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'good' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Maybe you can see an association between them that I don't see?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for sin that I've seen before include "Fall from grace" , "Misdeed" , "Breach of moral code" , "Wickedness" , "Behave badly" .)

I've seen this clue in the Evening Standard.

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