"Go to this people and say, "You will be ever hearing but never understanding; you will be ever seeing but never perceiving."" (NIV)
Go to this people and say to them, You will indeed hear and hear with your ears but will not understand, and you will indeed look and look with your eyes but will not see [not perceive, have knowledge of or become acquainted with what you look at, at all]. (AMP)
Saying, Go unto this people, and say, Hearing ye shall hear, and shall not understand; and seeing ye shall see, and not perceive: (KJV)