Sweeney is the author of Letting Go of God, a play about a young women’s loss of faith.

In a statement, the foundation called this a “lighthearted message.”

“A fifth of the U.S. population identifies as nonbelievers,” said Annie Laurie Gaylor, one of FFRF’s co-founders. “We don’t thank a nonexistent god, we put faith in each other and human ingenuity. We believe in deeds, not creeds. We believe the only afterlife that ought to concern us is leaving our descendants a secure and pleasant future.”

It’s the organization’s third Times Square billboard.