'Rock' in the Bible

As an adamant harder than a rock I have made thy forehead; thou dost not fear them, nor art thou affrighted before them, for a rebellious house are they.'

For her blood is in the midst of her; she set it upon the top of a rock; she poured it not upon the ground, to cover it with dust;

That it might cause fury to come up to take vengeance; I have set her blood upon the top of a rock, that it should not be covered.

And they shall destroy the walls of Tyrus, and break down her towers: I will also scrape her dust from her, and make her like the top of a rock.

And I will make thee like the top of a rock: thou shalt be a place to spread nets upon; thou shalt be built no more: for I the LORD have spoken it, saith the Lord GOD.