Bad character in a good book (7)

I believe the answer is:

jezebel

I'm a little stuck... Click here to teach me more about this clue!

'bad character' is the definition.
'jezebel' can be an answer for 'character' (I have seen 'Biblical character' mean 'jezebel' so perhaps 'character' could also mean 'jezebel'). I'm unsure of the 'bad' bit.

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for jezebel that I've seen before include "Hussy" , "Shameless scheming woman in the Bible" , "Shameless or immoral woman" , "Wicked wife of Ahab" , "OT wife of Ahab" .)

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