LEFT JOIN query help

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I am writing a Bible trivia application.  I am trying to write the mySQL
query that will select the next question reference number and the current
question is answered.  The value I want to retrieve It is in the field:
`verse_of_the_day_Bible_trivia`.`reference`

I don't think I have my LEFT JOIN's right.  When I take away the "WHERE"
clause only the records the user has answered are selected.  Then they are
being eliminated with the WHERE clause.

I am hoping the results join the 3 tables together --- really wide ---
with the user profile on the left hand side and then the question is the
middle and if the user has answered it then this record on the right hand
side, otherwise the fields are NULL.  Does this make sense?  Ron

SELECT `verse_of_the_day_Bible_trivia`.`reference` FROM

( `my_Bible_trivia_knowledge_profile` LEFT JOIN
`my_Bible_trivia_knowledge_questions_answered` ON
`my_Bible_trivia_knowledge_profile`.`reference` =
`my_Bible_trivia_knowledge_questions_answered`.`my_Bible_trivia_knowledge_profile_reference`
)

LEFT JOIN

`verse_of_the_day_Bible_trivia` ON
`verse_of_the_day_Bible_trivia`.`reference` =
`my_Bible_trivia_knowledge_questions_answered`.`verse_of_the_day_Bible_trivia_reference`

WHERE

`my_Bible_trivia_knowledge_questions_answered`.`my_Bible_trivia_knowledge_profile_reference`
<> $user_reference AND
`my_Bible_trivia_knowledge_questions_answered`.`score` IS NULL AND
`verse_of_the_day_Bible_trivia`.`live` =1

ORDER BY RAND() LIMIT 1


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