Romans 11:8
And so Scripture says, "God has given them a spirit of drowsiness--eyes to see nothing with and ears to hear nothing with--even until now."
Matthew 13:13-14
I speak to them in figurative language for this reason, that while looking they do not see, and while hearing they neither hear nor understand.
Mark 4:11-12
"To you," He replied, "has been entrusted the secret truth concerning the Kingdom of God; but to those others outside your number all this is spoken in figurative language;
Luke 8:10
"To you," He replied, "it is granted to know the secrets of the Kingdom of God; but all others are taught by parables, in order that they may see and yet not see, and may hear and yet not understand.
Acts 28:26
"'Go to this people and tell them, you will hear and hear, and by no means understand; and will look and look, and by no means see.
2 Corinthians 3:14-15
Nay, their minds were made dull; for to this very day during the reading of the book of the ancient Covenant, the same veil remains unlifted, because it is only in Christ that it is to be abolished.