Ezekiel 3:6-8

New Revised Standard Version, Anglicised

⁶ not to many peoples of obscure speech and difficult language, whose words you cannot understand. Surely, if I sent you to them, they would listen to you. ⁷ But the house of Israel will not listen to you, for they are not willing to listen to me; because all the house of Israel have a hard forehead and a stubborn heart. ⁸ See, I have made your face hard against their faces, and your forehead hard against their foreheads.