Job 41:24 KJV
His heart is as firm as a stone; yea, as hard as a piece of the nether millstone.
Job 41:22–26 KJV Chapter Context
22
In his neck remaineth strength, and sorrow is turned into joy before him.
23
The flakes of his flesh are joined together: they are firm in themselves; they cannot be moved.
24
His heart is as firm as a stone; yea, as hard as a piece of the nether millstone.
25
When he raiseth up himself, the mighty are afraid: by reason of breakings they purify themselves.
26
The sword of him that layeth at him cannot hold: the spear, the dart, nor the habergeon.