Job 41:30 - Exposition

Sharp stones are under him ; rather, jagged potsherds are under him ; i.e. "his belly is covered with jagged scales"—a thing which is true of the crocodile, but scarcely of any other beast. He spreadeth sharp pointed things (rather, a threshing-wain , or a corn-drag ) upon the mire. He leaves on the mud on which he has lain, i.e. ' an impression as of an Oriental threshing-wain, or corn-drag, which is "a thick plank of timber, stuck full on the under side, of flints or hard cutting stones arranged in the form of the palate or rough tongue of a cow". The mud-banks on which crocodiles have been lying are said to be scored all over with such impressions.