Ezekiel 3:4-8

And he said to me, “Son of man, go to the house of Israel and speak with my words to them. For you are not sent to a people of foreign speech and a hard language, but to the house of Israel— not to many peoples of foreign speech and a hard language, whose words you cannot understand. Surely, if I sent you to such, they would listen to you. But the house of Israel will not be willing to 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. Behold, I have made your face as hard as their faces, and your forehead as hard as their foreheads.