John 9:39-41
And Jesus said, For judgment I am come into this world, that they which see not might see; and that they which see might be made blind. [40] And some of the Pharisees which were with him heard these words, and said unto him, Are we blind also? [41] Jesus said unto them, If ye were blind, ye should have no sin: but now ye say, We see; therefore your sin remaineth.
Matthew 13:13-14
Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand. [14] And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive:
Mark 4:12
That seeing they may see, and not perceive; and hearing they may hear, and not understand; lest at any time they should be converted, and their sins should be forgiven them.