JACKSONVILLE, Fla.—In America’s celebrity-driven culture, perhaps the most harmful “Pied Piper” of heresies leading millions astray is Oprah Winfrey. Her adoption of anti-biblical doctrine is on display every day this year through her satellite radio network channel “Oprah & Friends.” It’s time for Christians to “just say no” to the big “O.” In recent weeks I have received multiple copies of the same e-mail warning Christians about Oprah Winfrey’s promotion of New Age teaching. Oftentimes, broadcast e-mails are baseless and erroneous—like the one that warns Madalyn Murray O’Hair ...