

Ep. 33 / The Evangelical Quadrilateral and the History of a Movement ► David Bebbington (Part 1)
What exactly makes someone an evangelical Christian? Dr. David Bebbington, whose work has become the definitive framework for understanding this global movement, joins us to unpack the rich history and defining characteristics of evangelicalism.
Prof. Bebbington's "quadrilateral" – emphasizing the Bible, the Cross, conversion, and activism – has become the most widely cited definition of evangelical identity since its introduction in 1989. In this illuminating conversation, he traces how evangelicalism emerged in the 18th century, drawing from Puritan theology while incorporating Anglican and continental influences. Far from being static, the movement constantly evolved in response to cultural shifts from the Enlightenment through Romanticism and beyond.
We explore fascinating questions about evangelical boundaries: Are Pentecostals evangelical? What about fundamentalists? Can Roman Catholics be evangelical? Bebbington provides nuanced answers that challenge simplistic categorizations, revealing the movement's theological flexibility despite its clear core commitments.
The conversation also addresses how evangelicalism catalyzed modern missions through voluntary societies that transformed Christianity's global footprint. While acknowledging the political associations that have become attached to the evangelical label in countries like the United States and Brazil, Bebbington reminds us that these alignments are not universal – in Britain, for instance, evangelicals have historically spanned the political spectrum.
For anyone seeking clarity about evangelical identity amid today's complex religious landscape, this conversation offers rare historical perspective from the scholar whose insights have shaped our understanding of a movement that has grown from approximately 90 million believers in the 1960s to around 600 million today.
You can learn more from Dr. David Bebbington through his scholarship and publications.
And you can share this episode using hashtag #Evangelical360 and join the conversation online!
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