" The point is that an $80,000 or a $180,000 salary does not have to be accompanied by an $80,000 or a $180,000 lifestyle. God is calling us to be conduits of his grace, not cul-de-sacs. Our great danger today is thinking that the conduit should be lined with gold. It shouldn’t. Copper will do. No matter how grateful we are, gold will not make the world think that our God is good; it will make people think that our god is gold. That is no honor to the supremacy of his worth. "

― John Piper , Let the Nations Be Glad!: The Supremacy of God in Missions