Ezekiel 3:9-11

9I 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 people.” 10And he said to me, “Son of man, listen carefully and take to heart all the words I speak to you. 11Go now to your people in exile and speak to them. Say to them, ‘This is what the Sovereign Lord says,’ whether they listen or fail to listen.”