He has also broken my teeth with gravel stones; he has covered me with ashes.
For this reason, he says that his teeth had been broken by a little stone or pebble. (178) The same expression, if I mistake not, is found in Job. It is a metaphor taken from those who press stones instead of bread under their teeth; for when grit lies hid in bread, it hurts the teeth. Then inward and hidden griefs are said to be like small stones, which break or shatter the teeth. For the Prophet does not speak here of large stones, but on the contrary he speaks of pebbles or small stones, which deceive men, for they lie hid either in bread or in meat, or in any other kind of food. As, then, the teeth are hurt by pressing them, so the Prophet says that his sorrows were most bitter, as that part, as it is well known, is very tender; and when any injury is done to the teeth, the pain spreads instantly almost through the whole body. This is the reason why he says that his teeth were broken. 