(CNN) When Peter Sprigg speaks publicly about his opposition to homosexuality, something odd often happens.
During his speeches, people raise their hands to challenge his assertions that the Bible condemns homosexuality, but no Christians speak out to defend him.
"But after it is over, they will come over to talk to me and whisper in my ear, ‘I agree with everything you said,'" says Sprigg, a spokesman for The Family Research Council, a powerful, conservative Christian lobbying group.
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We've heard of the "down-low" gay person who keeps his or her sexual identity secret for fear of public scorn. But Sprigg and other evangelicals say changing attitudes toward homosexuality have created a new victim: closeted Christians who believe the Bible condemns homosexuality but will not say so publicly for fear of being labeled a hateful bigot.