Do religious Americans really know the basics of their faith?

Nearly two-thirds of Americans say they believe that the Bible holds the answer to all or most of life’s basic questions. Yet only one-third know that Jesus delivered the Sermon on the Mount, and 10 percent think that Joan of Arc was Noah’s wife.

Many Americans know even less about other faiths, from Islam to Hinduism. Several days after 9/11, a vigilante shot and killed an Indian-American Sikh because of the assumption that a turban must mean a Muslim: Ignorance and murderous bigotry joined in one.

All this goes to the larger question of the relevance of the humanities. Literature, philosophy and the arts have come to be seen as effete and irrelevant, but if we want to understand the world around us and think deeply about it, it helps to have exposure to Shakespeare and Kant, Mozart and Confucius — and, yes, Jesus, Moses and the Prophet Muhammad.

Secularists sometimes believe religious knowledge doesn’t matter because the world is leaving faith behind. Really? Faith is elemental in much of the world, including large swaths of America.