Mark 9:28

And He entering into a house, His disciples asked Him privately, Why could we not cast him out?

Mark 7:17

And when He had entered into the house away from the crowd, His disciples asked Him concerning the parable.

Matthew 13:10

And the disciples said to Him, Why do You speak to them in parables?

Matthew 13:36

Then sending the crowds away, Jesus went into the house. And His disciples came to Him, saying, Explain to us the parable of the darnel of the field.

Matthew 15:15

Then Peter answered and said to Him, Explain this parable to us.

Matthew 17:19-20

Then the disciples came to Jesus apart, and said, Why could we not cast him out?

Mark 4:10

And when He was alone, they who were about Him, with the Twelve, asked Him concerning the parable.

Mark 4:34

But he did not speak to them without a parable. And when they were alone, He explained all things to His disciples.

Treasury of Scripture Knowledge

Summary

And when he was come into the house, his disciples asked him privately, Why could not we cast him out?

Bible References

Asked

Mark 4:10
And when He was alone, they who were about Him, with the Twelve, asked Him concerning the parable.
Matthew 13:10
And the disciples said to Him, Why do You speak to them in parables?
Matthew 15:15
Then Peter answered and said to Him, Explain this parable to us.

Why

Matthew 17:19
Then the disciples came to Jesus apart, and said, Why could we not cast him out?

General references

2 Kings 20:10
And Hezekiah answered, It is a light thing for the shadow to go down ten steps. No, but let the shadow go backward ten steps.
Matthew 17:19
Then the disciples came to Jesus apart, and said, Why could we not cast him out?
Mark 10:10
And in the house His disciples asked Him again about the same.