Ezekiel 3:9 in the World English Bible
I have made your forehead as a diamond, harder than flint. Don’t be afraid of them, neither be dismayed at their looks, though they are a rebellious house.”
Context
8 Behold, I have made thy face strong against their faces, and thy forehead strong against their foreheads.
9 As an adamant harder than flint have I made thy forehead: fear them not, neither be dismayed at their looks, though they be a rebellious house.
10 Moreover he said unto me, Son of man, all my words that I shall speak unto thee receive in thine heart, and hear with thine ears.