Matthew 13:14
The prophecy of Isaiah is fulfilled. 'By hearing, you shall hear, and shall in no way understand. By seeing you shall see, and shall in no way perceive.
Isaiah 6:9-10
He said: Go and tell this people: 'Hear constantly but do not understand. See constantly but do not perceive.'
Mark 4:12
So that seeing they may see and not perceive. And hearing they may hear and not understand. Otherwise they might repent and be forgiven.
Luke 8:10
He said: You are meant to know the secrets of the kingdom of God. I speak to the rest in illustrations, that seeing they may not see and hearing they may not understand.
Ezekiel 12:2
Son of man, you are living among rebellious people. They have eyes, but they cannot see. They have ears, but they cannot hear because they are rebellious people.
John 12:39-40
Isaiah revealed the reason they could not believe:
Acts 28:25-27
So they left, disagreeing among themselves, after Paul had said this one thing: How well the Holy Spirit spoke through the prophet Isaiah to your ancestors!
Romans 11:8-10
It is written, God has given them the spirit of slumber, eyes that they should not see, and ears that they should not hear to this very day. (Deuteronomy 29:4)
2 Corinthians 3:14
Their minds were blinded. Until this day the same veil remains at the reading of the old covenant. It is not revealed to them that Christ voided it.