John 8:27
They did not perceive that He was speaking to them of the Father.
John 8:43
How is it you do not understand me when I speak? It is because you cannot bear to listen to my words.
John 8:47
He who is a child of God listens to God's words. You do not listen to them: and why? It is because you are not God's children."
Romans 11:7-10
How then does the matter stand? It stands thus. That which Israel are in earnest pursuit of, they have not obtained; but God's chosen servants have obtained it, and the rest have become hardened.
2 Corinthians 4:3-4
If, however, the meaning of our Good News has been veiled, the veil has been on the hearts of those who are on the way to perdition,