Pious has a bit of an image problem. From the beginning of its use in the 15th century this Latin descendant has been used to describe those who are simply very religious—that is, who are deeply devoted to their religion—but it has for centuries also described those who make a show of their religiousness and use it to assert their superiority. We see both in literature:
She sent for a minister, too, a serious, pious, good man, and applied herself with such earnestness, by his assistance, to the work of a sincere repentance, that I believe, and so did the minister too, that she was a true penitent…. — Daniel Defoe, Moll Flanders, 1722
There are a thousand hacking at the branches of evil to one who is striking at the root, and it may be that he who bestows the largest amount of time and money on the needy is doing the most by his mode of life to produce that misery which he strives in vain to relieve. It is the pious slave-breeder devoting the proceeds of every tenth slave to buy a Sunday's liberty for the rest. — Henry David Thoreau, Walden, 1854
Over the years other meanings have developed too. Pious can be used positively to describe those who are dutiful or virtuous, or things that are worthy. And it can be used negatively to describe hypocrisy. It is also used neutrally to distinguish what is religious from what is nonreligious in content, as in this humorous excerpt from Emily Brontë's 1847 Wuthering Heights:
Joseph was an elderly, nay, an old man—very old, perhaps, though hale and sinewy. "The Lord help us!" he soliloquized in an undertone of peevish displeasure, while relieving me of my horse, looking, meantime, in my face so sourly that I charitably conjectured he must have need of divine aid to digest his dinner, and his pious ejaculation had no reference to my unexpected advent.
Because the word is about religion and religiousness, many associate pious with the Bible. It is, however, wholly absent from many translations of the Bible, probably because of its ambiguous meaning. Pious is, though, included in The New Revised Standard Version and the paraphrasing Living Bible, among a number of others:
The blessing of the Lord is the reward of the pious, and quickly God causes his blessing to flourish. — Sirach 11:22, New Revised Standard Version
You try to look like saintly men, but underneath those pious robes of yours are hearts besmirched with every sort of hypocrisy and sin. — Matthew 23:28, The Living Bible
Piety, which most often refers to simple religious devotion, doesn't have the same problem, and is more widely used in biblical translations.
We must ask to what extent, and at however unconscious a level, a conflict arises in the pious political mind when it is sworn to uphold the civil religion of the Constitution. E. L. Doctorow, Free Inquiry, October/November 2008But our problem is the lack of any shared or coherent attitude toward the rest of the world, without which, as Judt acknowledges, Europe exists in pieces, an outsize Switzerland held together by nothing more solid than pious sentiment. Nicholas Fraser, Harper's, May 2006The other side of the masonry block was covered with a web of ancient graffiti, she said, left by pious visitors to the tomb. Tom Mueller, Atlantic, October 2003The news offered so many occasions for pious or ribald commentary that any chance of agreement about what any of it meant was lost in a vast din of clucking and sniggering. Lewis H. Lapham, Harper's, August 1997Japanese schools have another eccentricity, which is the pious, Sunday-school-like enthusiasm of students and teachers alike for education about values. Teachers sometimes sound so saccharine that they would make Mr. Rogers look like a cynic. Nicholas D. Kristof, New York Times Magazine, 17 Aug. 1997 They lived a quiet, pious life. I'm tired of hearing politicians making pious pronouncements about their devotion to the people. See More
Recent Examples on the WebAll women in Gilead are required to be pious and subservient to men.Los Angeles Times, 29 June 2022 Americans, even or especially historians, tend to treat the early New Englanders as dogmatists: narrow, pious simpletons. Marilynne Robinson, Harper’s Magazine , 20 July 2022 The very pious Francis Scott Key … felt that the nation was weak militarily, politically divided, and moving toward a dangerous secularism. Randy Dotinga, The Christian Science Monitor, 1 July 2022 But though pious and appropriate—if a writer’s publisher does not defend his humanity, who will?—the statement is not true. Adam Gopnik, The New Yorker, 15 June 2022 Staples sings from her depths, with low moans and ragged, seductive growls that cut through even the most pious lyric. David Remnick, The New Yorker, 27 June 2022 Ferdinand’s life in recovery is spent in occasional erections, unending pain, and grimacing irony at the attempts at pious reassurance from the doctors who have received him to treat him before he is sent to London for recovery. Adam Gopnik, The New Yorker, 15 June 2022 The tenor here feels pious, as though somehow the whole process has reverted to the religious origins of incarceration.New York Times, 7 June 2022 Far from shutting down those protests, Trudeau actually participated in them, making a pious spectacle out of himself. Kevin D. Williamson, National Review, 16 Feb. 2022 See More