premise one: we (USA/Western Europe) once lived in a Christendom.

premise two: we (USA/Western Europe) no longer live in a Christendom.

conclusion: we (USA/Western Europe) should not pretend that we live in a Christendom.

one implication: "show sympathy toward and deep acquaintance with the literature, music, theater, etc. of the existing culture's hopes, dreams, 'heroic' narratives, fears ... then enter and retell the culture's story with the gospel." -keller