Isaiah 6:8-10

Then I heard the voice of the Lord saying, ‘Whom shall I send? And who will go for us?’ And I said, ‘Here am I. Send me!’ He said, ‘Go and tell this people: ‘ “Be ever hearing, but never understanding; be ever seeing, but never perceiving.” Make the heart of this people calloused; make their ears dull and close their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts, and turn and be healed.’