Job 41:25

23The flakes of his flesh are joined together: they are firm in themselves; they cannot be moved.

24His heart is as firm as a stone; yea, as hard as a piece of the nether millstone.

25When he raiseth up himself, the mighty are afraid: by reason of breakings they purify themselves.

26The sword of him that layeth at him cannot hold: the spear, the dart, nor the habergeon.

27He esteemeth iron as straw, and brass as rotten wood.