Romans 11:8
as has been written, God has given them the spirit of slumber, eyes that they should not see, and ears that they should not hear, unto this day.
2 Thessalonians 2:9-12
whose coming is according to the energy of Satan in all power and signs and wonders of falsehood,
Acts 28:26-27
Go to this people, and say, By hearing ye shall hear, and may not understand; and seeing you shall see, and may not perceive:
2 Corinthians 4:4
in whom the god of this age has blinded the minds of those who believe not, in order that the light of the gospel of the glory of Christ, who is the image of God, may not shine on them.