"Lucifer" , when you look at the context and translation , is only used on one place in the bible.. and that is Isaiah. It is the mocking song against king Neb, and comparing King Neb with a fallen deity who fell due to ego in trying to reach too high.

This shows on how much Christian mythology about 'The Devil' is non-biblical.

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‎"Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge." — Isaac Asimov