Mark 4:12
that, seeing, they may see, and not perceive; and, hearing, they may hear, and not understand; lest haply they should turn, and be forgiven."
Mark 8:17-21
And perceiving it, He saith to them, "Why are ye reasoning because ye have no bread? Do ye not yet perceive, nor understand? Have ye your heart hardened?
Ephesians 2:11
Wherefore, remember that ye, the gentiles in flesh, who are called uncircumcision by that which is called circumcision in flesh made by hand,
2 Thessalonians 2:10-12
and in all deceit of unrighteousness to those who perish; because they received not the love of the truth, that they might be saved.