"I will make your forehead like the hardest stone, harder than flint. Do not be afraid of them or terrified by them, though they are a rebellious house."
Like an adamant harder than flint or a diamond point have I made your forehead; fear them not, neither be dismayed at their looks, for they are a rebellious house. [Isa. 50:7; Jer. 1:18; 15:20; Mic. 3:8.]AMP
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.
When I say to the wicked, 'You will surely die,' and you do not warn them or speak out to dissuade them from their evil ways in order to save their lives, those wicked people will die for their sins, and I will hold you accountable for their blood.
If I say to the wicked, You shall surely die, and you do not give him warning or speak to warn the wicked to turn from his wicked way, to save his life, the same wicked man shall die in his iniquity, but his blood will I require at your hand.
When I say unto the wicked, Thou shalt surely die; and thou givest him not warning, nor speakest to warn the wicked from his wicked way, to save his life; the same wicked man shall die in his iniquity; but his blood will I require at thine hand.