Irreconcilable differences drive the division between progressive and conservative Christians—is there a divorce coming?
Much attention has been paid to political polarization in America, but far less to the growing schism between progressive and conservative Christians. In this groundbreaking new book, George Yancey and Ashlee Quosigk offer the provocative contention that progressive and conservative Christianities have diverged so much in their core values that they ought to be thought of as two separate religions.
The authors draw on both quantitative data and interviews to uncover how progressive and conservative Christians determine with whom they align themselves religiously, and how they distinguish themselves from each other. They find that progressive Christians emphasize political agreement relating to social justice issues as they determine who is part of their in-group, and focus less on theological agreement. Among conservative Christians, on the other hand, the major concern is whether one agrees with them on core theological points. Progressive and conservative Christians thus use entirely different factors in determining their social identity and moral values.
In a time when religion and politics have never seemed so intertwined, One Faith No Longer offers a timely and compelling reframing of an age-old conflict.

"Yancey and Quosigk address what makes a distinct, separate religion, as opposed to a variation within a larger faith tradition ... They find that progressive Evangelicals were less comfortable with the descriptor “Evangelical,” and were more apt to make common cause with fellow progressives than conservative Evangelicals and to avoid collaboration even where interests converge. Yancey and Quosigk find that religious motivation also diverges: conservatives ground their actions in their desire to pattern their lives on a biblically derived imperative, while progressives look instead to humanitarian ideals." - Library Journal

"One Faith No Longer upends the conventional wisdom that conservative Christians are uniquely prone to falling captive to unbiblical political ideologies, or that conservative Christians are filled with rage toward their theological opponents. Through research and interviews, Yancey and Quosigk demonstrate the opposite: it’s progressives who rarely defy political orthodoxy and who harbor disdain for conservatives. And the hardening lines between these two groups add weight to the thesis of J. Gresham Machen a century ago: when it comes to Christianity and theological liberalism, we really are talking about two different religions." - The Gospel Coalition

"In their rigorous sociological account of Christianity in America today, George Yancey and Ashlee Quosigk provide many important insights, particularly in relation to progressive Christians, though overall the book simply confirms the enduring truth that Christians have always disagreed among themselves about faith and politics." - The Public Discourse

"Their book’s central argument is that conservative and progressive Christians have become so different in the ways they determine social identity and moral values that they ought to be thought of as separate religions. This conclusion will ring true for anyone who pays attention to the news." - The Christian Century

"Yancey (sociology, Baylor Univ.) and Quosigk (visiting scholar, religion, Univ. of Georgia) assert that… it is no longer meaningful to use the rubric Christian to describe both conservative and progressive churches." - CHOICE