Job 41:23-30

23The folds of its flesh are tightly joined; they are firm and immovable. 24Its chest is hard as rock, hard as a lower millstone. 25When it rises up, the mighty are terrified; they retreat before its thrashing. 26The sword that reaches it has no effect, nor does the spear or the dart or the javelin. 27Iron it treats like straw and bronze like rotten wood. 28Arrows do not make it flee; slingstones are like chaff to it. 29A club seems to it but a piece of straw; it laughs at the rattling of the lance. 30Its undersides are jagged potsherds, leaving a trail in the mud like a threshing sledge.