Yechezkel 3:8-10

Orthodox Jewish Bible

⁸ Hinei, I have made thy face chazakim against their faces, and thy metzach chazak (forehead strong) against their metzach.

⁹ As a shamir (adamant, hardest stone) more chazak than flint have I made thy metzach (forehead); fear them not, neither be terrified at their looks, though they be a bais meri (house of rebellion).

¹⁰ Moreover He said unto me, Ben Adam, all My words that I shall speak unto thee receive in thine lev, and hear with thine oznayim.