Matthew 13:10-13 (New International Version)

 ¹⁰The disciples came to him and asked, "Why do you speak to the people in parables?"

 ¹¹He replied, "The knowledge of the secrets of the kingdom of heaven has been given to you, but not to them. ¹²Whoever has will be given more, and he will have an abundance. Whoever does not have, even what he has will be taken from him. ¹³This is why I speak to them in parables:
   "Though seeing, they do not see;
      though hearing, they do not hear or understand.