Mark 9:32

But they did not understand this statement, and they were afraid to ask Him [what He meant].

Luke 2:50

But they did not understand what He had said to them.

Luke 18:34

But the disciples understood none of these things [about the approaching death and resurrection of Jesus]. This statement was hidden from them, and they did not grasp the [meaning of the] things that were said [by Jesus].

Luke 9:45

However, they did not understand this statement. Its meaning was kept hidden from them so that they would not grasp it; and they were afraid to ask Him about it.

Mark 9:10

So they [carefully and faithfully] kept the matter to themselves, discussing and questioning [with one another] what it meant to rise from the dead.

John 12:16

His disciples did not understand [the meaning of] these things at first; but when Jesus was glorified and exalted, they remembered that these things had been written about Him and had been done to Him.

John 16:19

Jesus knew that they wanted to ask Him, so He said to them, “Are you wondering among yourselves about what I meant when I said, ‘A little while, and you will not see Me, and again a little while, and you will see Me’?

Mark 7:18

And He said to them, “Are you, too, so foolish and lacking in understanding? Do you not understand that whatever goes into the man from outside cannot defile and dishonor him,

Mark 8:17-18

Jesus, aware of this [discussion], said to them, “Why are you discussing [the fact] that you have no bread? Do you still not see or understand? Are your hearts hardened?

Mark 8:33

But turning around [with His back to Peter] and seeing His disciples, He rebuked Peter, saying, “Get behind Me, Satan; for your mind is not set on God’s will or His values and purposes, but on what pleases man.”

Mark 16:14

Later, Jesus appeared to the eleven [disciples] themselves as they were reclining at the table; and He called them to account for their unbelief and hardness of heart, because they had not believed those who had seen Him after He had risen [from death].

Luke 24:45

Then He opened their minds to [help them] understand the Scriptures,

John 4:27

Just then His disciples came, and they were surprised to find Him talking with a woman. However, no one said, “What are You asking about?” or, “Why are You talking to her?”

Treasury of Scripture Knowledge

Summary

But they understood not that saying, and were afraid to ask him.

General references

Bible References

Were

Mark 7:18
And He said to them, “Are you, too, so foolish and lacking in understanding? Do you not understand that whatever goes into the man from outside cannot defile and dishonor him,
Mark 8:17
Jesus, aware of this [discussion], said to them, “Why are you discussing [the fact] that you have no bread? Do you still not see or understand? Are your hearts hardened?
Mark 16:14
Later, Jesus appeared to the eleven [disciples] themselves as they were reclining at the table; and He called them to account for their unbelief and hardness of heart, because they had not believed those who had seen Him after He had risen [from death].
John 4:27
Just then His disciples came, and they were surprised to find Him talking with a woman. However, no one said, “What are You asking about?” or, “Why are You talking to her?”
John 16:19
Jesus knew that they wanted to ask Him, so He said to them, “Are you wondering among yourselves about what I meant when I said, ‘A little while, and you will not see Me, and again a little while, and you will see Me’?

General references

Matthew 15:16
And He said, “Are you still so dull [and unable to put things together]?
Luke 9:45
However, they did not understand this statement. Its meaning was kept hidden from them so that they would not grasp it; and they were afraid to ask Him about it.
Luke 18:34
But the disciples understood none of these things [about the approaching death and resurrection of Jesus]. This statement was hidden from them, and they did not grasp the [meaning of the] things that were said [by Jesus].