Matthew 13:14 (KJV)

Who hath ears to hear, let him hear.

And the disciples came, and said unto him, Why speakest thou unto them in parables?

He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given.

For whosoever hath, to him shall be given, and he shall have more abundance: but whosoever hath not, from him shall be taken away even that he hath.

Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.

For this people's heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.

But blessed are your eyes, for they see: and your ears, for they hear.

For verily I say unto you, That many prophets and righteous men have desired to see those things which ye see, and have not seen them; and to hear those things which ye hear, and have not heard them.

Hear ye therefore the parable of the sower.

When any one heareth the word of the kingdom, and understandeth it not, then cometh the wicked one, and catcheth away that which was sown in his heart. This is he which received seed by the way side.