We cannot suppose that this law required the Israelites to
   entertain slaves who had robbed their masters, or left their
   service without cause; but such only as were cruelly treated,
   and fled to them for protection, especially from the
   neighbouring nations.  To such they were commanded to afford
   shelter, and shew great kindness.
 
  1Sa 30:15  Ob 1:14  Phm 1:10-19