Ezekiel 3:1-9

And he said unto me, Son of man, eat that which thou findest; eat this roll, and go, speak unto the house of Israel. So I opened my mouth, and he caused me to eat the roll. And he said unto me, Son of man, cause thy belly to eat, and fill thy bowels with this roll that I give thee. Then did I eat it; and it was in my mouth as honey for sweetness. And he said unto me, Son of man, go, get thee unto the house of Israel, and speak with my words unto them. For thou art not sent to a people of a strange speech and of a hard language, but to the house of Israel; not to many peoples of a strange speech and of a hard language, whose words thou canst not understand. Surely, if I sent thee to them, they would hearken unto thee. But the house of Israel will not hearken unto thee; for they will not hearken unto me: for all the house of Israel are of a hard forehead and of a stiff heart. Behold, I have made thy face hard against their faces, and thy forehead hard against their foreheads. As an adamant harder than flint have I made thy forehead: fear them not, neither be dismayed at their looks, though they are a rebellious house.