Evangelicalism
There are many ways to define evangelicalism, whether it’s sociologically, politically, or theologically. The best-known and most widely used definition comes from David Bebbington’s 1989 Evangelicalism in Modern Britain. Known as the Bebbington quadrilateral, it lists four emphases used to identify evangelicalism: the importance of the Bible, Christ’s redemptive work on the cross, the need for conversion, and activism.