* When.
  Ge 28:20-22  Nu 6:2  21:2  De 23:21-23  Jud 11:30,31,39 
  1Sa 1:11,28 
 * a singular vow.
   A vow is a religious promise made to God, for the most part
   with prayer, and paid with thanksgiving.  Vows were either of
   abstinence (Nu 6:30), or the devoting of something to the
   Lord, as sacrifices (Le 7:16,) or the value of persons,
   beasts, houses, or lands, concerning which the law is here
   given.  A man might vow or devote himself, his children, his
   domestics, his cattle, his goods, etc.; and respecting the
   redemption of all these, rules are laid down in this chapter.
   But if, after consecrating these things, he refused to redeem
   them, they then became the Lord's property forever.  The
   persons continued all their lives devoted to the sanctuary,
   the goods were sold for the profit of the temple, or the
   priests; and the animals, if clean, were offered in
   sacrifice; and if not proper for sacrifice, were sold, and
   the proceeds devoted to sacred uses.  This is a general view
   of the different laws relative to vows, mentioned in this
   chapter.

  Ec 5:4,5