Job 41:23

21His breath kindleth coals, and a flame goeth out of his mouth.

22In his neck remaineth strength, and sorrow is turned into joy before him.

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.