John 8:43
Wherefore do ye not understand my speech? because ye cannot hear my word.
John 7:17
If any man will do his will, he shall know respecting the doctrine, whether it is of God, or whether I speak from myself.
John 5:43
I have come in my Father's name, and ye receive me not: if another come in his own name, him ye will receive.
John 6:60
Many therefore of his disciples, who heard him, said, Difficult is this discourse, who is able to fathom it?
John 8:27
They knew not that he spake to them of the Father.
John 12:39-40
For this reason they could not believe, because Isaiah had said again;
Acts 7:51
Ye stiff-necked and uncircumcised in heart and in ears, ye do always oppose yourselves against the Holy Ghost: as your fathers, so are ye.
Romans 3:11
there is none that understandeth, there is none that seeketh after God.
Romans 8:7-8
Because the propensity of the flesh is inimical against God: for it is not in subjection to the law of God, neither indeed can it be.