Last week, the British Bible Society quietly withdrew one of the most celebrated religious data stories of recent years. Its April 2025 report, “The Quiet Revival,” had claimed that church attendance in England and Wales was surging, especially among young men aged 18 to 24, where monthly attendance appeared to have quadrupled from 4% in 2018 to 16% in 2024. The story spread rapidly, was embraced by evangelical commentators and media outlets worldwide, and was treated as a counternarrative to the long-documented decline of Christianity in the West.
It was too good to be true.
It was too good to be true. And it was.
YouGov, which conducted the surveys, has now admitted that the 2024 data sample contained fraudulent responses and that key anti-fraud quality controls had not been activated.
YouGov’s CEO issued a public apology and accepted full responsibility. The Bible Society pulled the report. The “quiet revival” never happened, at least not in the way the data claimed.
This episode is instructive on several levels. But its lessons apply more broadly than to Christians alone.
The methodology problem nobody wanted to see
The first lesson is about method. The Quiet Revival relied on opt-in online polling, a technique long known to be vulnerable to panel contamination, particularly when studying hard-to-reach or socially desirable groups.
Pew Research Center raised concerns about the methodology almost immediately after the report was published. Humanists UK and leading demographers, including UCL’s David Voas, called attention to the implausibility of the findings months before the retraction.
Objective records from the Church of England and the Catholic Church showed no corresponding growth.
Objective records from the Church of England and the Catholic Church showed no corresponding growth. And yet for nearly a year, the Bible Society vigorously defended the report, repeatedly seeking and receiving assurances from YouGov.
The problem was not just that the method was flawed. The problem was that very few people asked hard questions about it, because the conclusion was so welcome.
Confirmation bias runs in both directions
It confirmed what many Christians hoped was true.
This brings us to the second and more uncomfortable lesson. The quiet revival narrative spread fast not because the evidence was strong, but because it confirmed what many Christians hoped was true.
The story resonated emotionally. It was shared, celebrated, and cited in sermons and strategy documents across denominations. Some church leaders used it to push back against what they saw as the relentlessly negative narrative of secularization research.
When data confirms our hopes, we treat it as evidence; when it challenges them, we question the method.
Even now, after the retraction, the Bible Society’s CEO has insisted there is “other evidence” that more people are finding faith, and that the wider story of spiritual renewal remains valid. That may or may not be true. But it illustrates a recurring pattern: when data confirms our hopes, we treat it as evidence; when it challenges them, we question the method.
The problem, however, is not uniquely Christian. Supporters of secularization theory are equally susceptible. In August 2025, a study published in Nature Communications by Stolz, de Graaf, Hackett, and colleagues proposed a three-stage model of religious decline, tested across 111 countries: first participation declines, then the personal importance of religion, and finally religious belonging.
The study received enormous attention, covered widely by outlets including Religion News Service and Pew Research Center, and was widely read as a definitive vindication of classic secularization theory. But the authors themselves urge caution, noting that “we recommend caution in interpreting longitudinal claims, due to limited data.” More importantly, the model has a structural problem.
When a theory can absorb any counterevidence by reclassifying it as a temporary deviation, it risks becoming unfalsifiable.
It treats every counterexample, whether Eastern Europe, Israel, or the Pentecostal and Islamic revivals, as countries either at an early stage of the transition or as exceptions requiring further investigation. When a theory can absorb any counterevidence by reclassifying it as a temporary deviation, it risks becoming unfalsifiable. That is not a strength of the model. It is a warning sign.
Steve Bruce and Tony Glendinning made a related move in their 2023 article in the journal Religions, titled “Secularization Vindicated,” arguing that the accumulated evidence now decisively supports the secularization thesis for the West.
That may well be right for the specific Western contexts they examine. But declaring the debate settled, and extrapolating the conclusion globally, is a different claim, and one the data does not yet fully support.
Both sides, in other words, are reading the data they want to see. Christians seized on a flawed poll to announce a revival. Secularization theorists have been too quick to declare religion’s global retreat inevitable and irreversible. Neither position is well supported by the evidence as it currently stands.
What the data actually tells us
There is no credible evidence of a Christian revival in the West.
The honest summary is more modest than either camp would like. There is no credible evidence of a Christian revival in the West. Long-term survey data, church attendance records, and generational trends all point in the opposite direction. The Quiet Revival was a story people wanted to believe, and that desire made them appear too ready to believe anything that confirmed their hopes.
There is equally no credible evidence that religion is disappearing globally.
But there is equally no credible evidence that religion is disappearing globally. Religious vitality in the Global South, the persistence of faith even in highly modernized societies, and the ongoing role of religion in political and social life across Latin America, Africa, the Middle East, and Asia all complicate any simple narrative of irreversible decline.
The secularization thesis, even in its more sophisticated sequenced forms, still struggles to account for these realities without special pleading.
What the data tells us is that religious change is real, uneven, context-dependent, and poorly served by grand unified theories.
What this means for religious freedom research
For those of us who work at the intersection of religion, data, and advocacy, the Quiet Revival episode is a useful case study. It illustrates three dynamics we should guard against regardless of our priors.
A compelling narrative.
First, the seduction of a good story. A revival among young men is a compelling narrative, just as the inevitable march of secularization is a compelling narrative. Both have cultural traction. Neither should substitute for rigorous evidence.
Inconvenient evidence.
Second, the slow response to inconvenient evidence. Pew flagged problems with the Quiet Revival data early. UCL’s David Voas raised questions publicly, as did NatCen’s John Curtice. The British Social Attitudes Survey showed continued decline.
It still took nearly a year for the retraction to happen. Institutions are not neutral processors of evidence; they have interests, donors, and constituencies. That applies to Christian organizations and to secular research institutions alike.
Residual belief.
Third, the residual belief after refutation. Even after withdrawing the report, the Bible Society maintained that a revival may still be occurring, citing Bible sales and baptism numbers.
Secularization theorists, similarly, tend to fold counterexamples into their models rather than question the models themselves. In both cases, the theory survives contact with disconfirming evidence a little too easily.
Reliable data about religion is not just an academic concern. It shapes policy, informs advocacy, and influences how governments and institutions respond to the needs of religious communities. The standard we apply to evidence should not depend on whether we like the conclusion. That is true for Christians hoping for revival. It is equally true for researchers hoping to have solved the secularization debate.
Caution and nuance are not signs of weakness. They are what good scholarship looks like.
Originally published by Five4Faith Substack. Republished with permission.
Dennis P. Petri, PhD is the International Director of the International Institute for Religious Freedom and Founder and scholar-at-large of the Observatory of Religious Freedom in Latin America. He is a Professor in International Relations at the Latin American University of Science and Technology. He is the author of The Specific Vulnerability of Religious Minorities, a book on undetected religious freedom challenges in Latin America.
The International Institute for Religious Freedom (IIRF) was founded in 2005 with the mission to promote religious freedom for all faiths from an academic perspective. The IIRF aspires to be an authoritative voice on religious freedom. They provide reliable and unbiased data on religious freedom—beyond anecdotal evidence—to strengthen academic research on the topic and to inform public policy at all levels. The IIRF's research results are disseminated through the International Journal for Religious Freedom and other publications. A particular emphasis of the IIRF is to encourage the study of religious freedom in tertiary institutions through its inclusion in educational curricula and by supporting postgraduate students with research projects.
