Isaiah 6:8-10
8 Also I heard the voice of the Lord, saying, Whom shall I send, and who will go for us? Then said I, Here am I; send me.

9 And he said, Go, and tell this people, Hear ye indeed, but understand not; and see ye indeed, but perceive not.

10 Make the heart of this people fat, and make their ears heavy, and shut their eyes; lest they see with their eyes, and hear with their ears, and understand with their heart, and convert, and be healed.
KJV

Isaiah 42:19-21
19 Who is blind, but my servant? or deaf, as my messenger that I sent? who is blind as he that is perfect, and blind as the LORD's servant?

20 Seeing many things, but thou observest not; opening the ears, but he heareth not.

21 The LORD is well pleased for his righteousness' sake; he will magnify the law, and make it honourable.
KJV

Matthew 13:14-15
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:

15 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.
KJV