Pr 30:15 "The leech has two daughters. `Give!
                       Give!' they cry. "There are three
                       things that are never satisfied, four
                       that never say, `Enough!': (NIV)
              Pr 30:16 the grave, the barren womb, land,
                       which is never satisfied with water,
                       and fire, which never says, `Enough!'
                       (NIV)