'...in Luke 12 Jesus says, "Watch out! Be on your guard against all kinds of greed." That is a remarkable statement. Think of another traditional sin that the Bible warns against - adultery. Jesus doesn't say, "Be careful you aren't committing adultery!" He doesn't have to. When you are in bed with someone else's spouse - you know it. Halfway through you don't say, "Oh, wait a minute! I think this is adultery!" You know it is. Yet, even though it is clear that the world is filled with greed and materialism, almost no one thinks it is true of them. They are in denial.'
Timothy Keller, Counterfeit Gods, p.57.
