Showbiz
Rex Features
The 28-year-old began singing as a child at her local church and left school aged 16 to tour the Christian music circuit before becoming a pop success.
She told America's Marie Claire that she was influenced by a documentary on the ideas presented in Dan Brown's book The Da Vinci Code.
"I've been contemplating taking a college course in religion. I love religion," she said.
"I remember whenever the book The Da Vinci Code came out, the Discovery Channel did this three-night piece on it that I TiVoed and then watched eight times."
In the same interview, Simpson admitted that she collects "lucky pennies" that she finds lying around and likes self-help books.
Simpson's sister Ashlee recently gave birth to a son, who the singer described as "beyond precious".
More: Jessica Simpson, Showbiz
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