I have heard pious people say, Well, you can’t live by Jesus’ teachings in this complex modern world. Fine, but then they might as well call themselves the Manichean Right or the Zoroastrian Right and not live by those teachings. If an economic imperative trumps a commandment of Jesus, they should just say so and drop these pretensions towards particular holiness — which, while we are no the subject of divine abhorrence, God, as I recall, does not view much more kindly than he does neglect of the poor. In fact, the two are often condemned together.
— Marilynne Robinson, ‘Family’ (The Death of Adam: Essays on Modern Thought, page 102)
That is how you lay the smack-down on people who want to claim the name ‘Christian’ but systematically strip out its substantive content.