John 10:6
Jesus told them this parable, but they did not understand what he was talking about; so he said to them again.
Matthew 13:13-14
"This is why I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand.
Matthew 13:51
"Have you understood all this?" he asked. "We have," they answered him.
John 6:52
Then the Jews began to dispute among themselves, saying, "How can this man give us his flesh to eat?"
John 6:60
So many of his disciples, when they heard it, said: "This teaching is unbelievable! Who can listen to him?"
John 7:36
"What does he mean saying, 'You shall seek me and you shall not find me,' and 'Where I am you cannot come'?"
John 8:27
They did not understand that he meant the Father,
John 8:43
"How is it that you do not understand what I say? It is because you cannot listen to my message.
John 16:25
"I have told you these things in figures; but the time is coming when I shall no longer speak in figures, but will tell you about the Father in plain words.
1 Corinthians 2:14
The unspiritual man rejects the teachings of God's Spirit; for him it is folly. He cannot understand it, for it is spiritually discerned,
1 John 5:20
And we know that the Son of God is come, and has granted us and understanding, so that we may come to know him who is true. And we are in him who is true, even in his Son Jesus Christ. This is the true God, and life eternal.