Mark 4:12
so that " 'They may look and look and yet not see, And listen and listen and yet not understand, Lest possibly they should turn and be forgiven.' ",
Mark 8:17-21
And he noticed it and said to them, "Why do you discuss your being without bread? Do you not yet see nor understand? Are your minds so dull?
Ephesians 2:11
So remember that you were once physically heathen, and called uncircumcised by those who called themselves circumcised, though only physically, by human hands.
2 Thessalonians 2:10-12
and full of wicked deception for men who are going to destruction, because they refused to love the truth and be saved.