* vinegar.
  25:13,20 
 * as smoke.
   As the acidity of vinegar causes the unpleasantness and pain
   to the teeth, and by softening and dissolving the alkali of
   the bone, impairs their texture, and renders them incapable of
   mastication; and as smoke, by irritating the tender vessels,
   causes the eyes to smart, and prevents distinct vision; so a
   sluggish messenger is a continual vexation and loss to those
   by whom he is employed.

  Isa 65:5 
 * so.
  Mt 25:26  Ro 12:11  Heb 6:12