John 10:6
This parable spake Jesus unto them: but they knew nothing of the things which he spake to them.
Matthew 13:13-14
Therefore I speak to them in parables: that seeing, they may not see; and hearing, they may not hear nor understand.
Matthew 13:51
Jesus saith unto them, Have ye understood all these things?
John 6:52
Then the Jews contended with each other, saying, How can this man give us his flesh to eat?
John 6:60
Many therefore of his disciples, who heard him, said, Difficult is this discourse, who is able to fathom it?
John 7:36
What is this saying which he hath spoken, Ye shall seek me, and shall not find me: and where I am, ye cannot come?
John 8:27
They knew not that he spake to them of the Father.
John 8:43
Wherefore do ye not understand my speech? because ye cannot hear my word.
John 16:25
These things have I spoken to you in parables: but the hour is coming when I will no more speak to you in parables, but will plainly inform you respecting the Father.
1 Corinthians 2:14
But the natural man receiveth not the things of the Spirit of God: for they are folly to him: and he cannot know them, because they are spiritually discerned.
1 John 5:20
But we know that the Son of God hath come, and hath given to us understanding, that we might know the true God; and we are in him that is true, in his Son Jesus the Messiah. HE is the true God, and the life eternal.