Matthew 13:13-15

13Therefore I speak to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.

14And in them is fulfilled the prophecy of Isaiah, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive:

15For this people’s heart has become dull, and their ears are hard 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.