I will make you as unyielding and hardened as they are. I will make your forehead like the hardest stone, harder than flint. Do not be afraid of them or terrified by them, though they are a rebellious house." Go now to your countrymen in exile and speak to them. Say to them, 'This is what the Sovereign LORD says,' whether they listen or fail to listen." - from Ezekiel, chapter 3