Mark 9:32
But they did not understand this word and were afraid to ask him.
Luke 2:50
And they understood not the word which he spoke unto them.
Luke 18:34
And they understood none of these things, and this word was hid from them, and they did not know what was said.
Luke 9:45
But they did not understand this word, and it was hid from them that they should not understand, and they feared to ask him regarding this.
Mark 9:10
And they kept the word within themselves, questioning one with another what the rising from the dead should be.
John 12:16
His disciples did not understand these things at first, but when Jesus was glorified, then they remembered that these things were written of him and that they had done these things unto him.
John 16:19
Now Jesus knew that they were desirous to ask him and said unto them, Do ye enquire among yourselves of what I said, A little while, and ye shall not see me; and again, a little while, and ye shall see me?
Mark 7:18
And he said unto them, Are ye so without understanding also? Do ye not understand that anything from outside that enters into the man cannot defile him?
Mark 8:17-18
And as Jesus understood it, he said unto them, Why argue ye because ye have no bread? Do ye not consider nor understand? is your heart yet blind?
Mark 8:33
And he, turning about and looking at his disciples, rebuked Peter, saying, Get thyself from me, Satan, for thou knowest not the things that are of God, but the things that are of men.
Mark 16:14
Finally he appeared unto the eleven as they sat at the table and upbraided them for their unbelief and hardness of heart because they did not believe those who had seen him after he was risen.
Luke 24:45
Then he opened their understanding that they might understand the scriptures
John 4:27
And upon this came his disciples and marvelled that he talked with that woman; yet no one said, What askest thou? or, What talkest thou with her?