Hurricane Katrina holdout Hazzert Gillett reads his Bible in his New Orleans home in September 2005. The state's Legislature is considering a bill to make the Holy Bible the official state book. Brian Snyder/Reuters/Landov hide caption

itoggle caption Brian Snyder/Reuters/Landov

Pope Francis delivers a speech during a meeting with young people last month in Cagliari, Italy. Franco Origlia/Getty Images hide caption

itoggle caption Franco Origlia/Getty Images

Bishop McNeil, who isn't a cleric despite his name, speaks to reporters Wednesday at a news conference to introduce the Freethought Equality Fund PAC. Frank James/NPR hide caption

itoggle caption Frank James/NPR