They will see but will remain blind There's a verse in the Quran saying that the unbelievers will always be unbelievers because they can see the miracles, but even in this case, they won't believe.

I'm pretty sure I already read that in Christian verses, but I can't find again where I saw that.

Something like, they will see, but their eyes will be blind, they will hear, but will remain deaf.

Where did I read something like that? Which verse or text?
Acts 28:27  (Matt 13:15 is almost identical) 


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


Romans 11:8  


  (According as it is written, God hath given them the spirit of
  slumber, eyes that they should not see, and ears that they should not
  hear;) unto this day.


Isaiah 6:9  


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


Deut. 29:4  


  Yet the LORD hath not given you an heart to perceive, and eyes to see,
  and ears to hear, unto this day.