" Dullness of hearing” is hearing without faith and without the moral fruit of faith. It’s hearing the Bible or the preaching of the Bible the way you hear the freeway noise on I-94, or the way you hear Muzak in the dentist’s office or the way you hear recorded warnings at the airport that this is a smoke-free facility. You do but you don’t. You have grown dull to the sound. It does not awaken or produce anything. "

― John Piper , Take Care How You Listen: Sermons by John Piper on Receiving the Word