By any measure, Oprah Winfrey is one of the most successful women in America. Her net worth is now thought to exceed one billion dollars, and her expanding media empire is one of the great success stories of the modern entertainment industry. She recently celebrated the twentieth anniversary of "The Oprah Show," and is committed to a contract that will take the show through its twenty-fifth season. She regularly appears at the top of the "Most Admired Women" listings and has become a cultural icon, complete with her own magazine and product lines. But is there more to the meaning of Oprah Winfrey?

Marcia Z. Nelson sees Oprah as a major American religious leader. In The Gospel According to Oprah, Nelson presents her as the symbol and catalyst for a new American religion. "Oprah Winfrey, talk show host, film producer, and philanthropist, is not ordained. She is neither preacher nor religious professional. Yet her multimedia empire, built over two decades, has given her the scope and stature of an influential leader. Oprah has a prominent pulpit from which to preach," Nelson insists. Oprah's television audience of ten million (according to Nielsen ratings) and her magazine readership of 2.7 million together represent a massive media phenomenon. As Nelson explains, "Oprah's whole enterprise, which includes many media that provide platforms for her gospel as well as sources of income, is vast." Nelson's book epresents an effort to understand Oprah Winfrey as an exemplar and prophetess of a new form of American religion. In reality, Oprah is probably best understood as a highly-talented representative of the religion of positive thinking that has shaped American culture for at least the last two centuries. In this role, Oprah continues and extends a line of religious thought that replaces the transcendent with the temporal and looks for fulfillment and success as the goods of a satisfying life.

Marcia Z. Nelson is a writer who covers religions and spirituality. In previous works, she has considered various aspects of modern American religion, including contemporary meditation movements. In Oprah Winfrey she has found a figure of such influence and reach that she may well represent the mainstreaming of her own life philosophy.

Of course, Oprah's primary audience is comprised of women. "Oprah is primarily the voice of women in the middle: middle-class middle Americans," Nelson explains. Through her television show, magazine, and book club, Oprah reaches out to these women with a message of self-improvement, empowerment, and self-actualization.

Watching "The Oprah Show" is, Nelson insists, something like attending a worship service. "Go to this house of worship and sit down for an inspiring hour that will engage you and give you a lift," Nelson encourages. "An hour-long show five days a week adds up to a lot more pulpit time per week than the average pastor enjoys, and Oprah commands a lot bigger congregation."

Nelson's book is genuinely interesting, offering credible and helpful insights into the Oprah phenomenon. At the same time, Nelson gushes over the meaning of Oprah and seems to celebrate Oprah's redefinition of religious experience. Indeed, she goes so far as to refer to Oprah as a symbol of spiritual renewal. "In other words, it is not just talk, but talk that's been tested in life's fires--talk is testimony," she asserts. "As Oprah would say, this is about getting real. This is the language of authenticity. A preference for the freshness and vividness of experience over what can seem like the dull dryness of institutional faith is hardly new, of course. Spiritual renewal has ever been thus."