To be spiritual means that we are to be involved in theology—not as theologians—but as Christians who are willing to think about truth. The incarnational approach to truth affirms that truth is beyond our comprehension but within our grasp. To assume we know it all is not spiritual. To assume we know nothing is not spiritual. . . . We must learn to test our ideas and subjective notions by good exegesis and the tradition of the church.
-Robert Webber, Common Roots: The Original Call to an Ancient-Future Faith (Grand Rapids, MI: Zondervan, 2009), 264.