Mark 9:28

And when Jesus had come into a house, His disciples asked Him privately, "Why could we not drive out the evil spirit [from that boy]?"

Mark 7:17

And when He had gone into the house away from the crowd His disciples asked Him about this parable.

Matthew 13:10

Jesus' disciples came and said to Him, "Why are you speaking to them [i.e., the large crowds] by using parables?"

Matthew 13:36

He then left the crowds and went into the house. [While there] His disciples came to Him, and said, "Explain to us [the meaning of] the parable of the weeds in the field."

Matthew 15:15

And Peter said to Him, "Explain the parable to us."

Matthew 17:19-20

Then Jesus' disciples came to Him privately and said, "Why could we not drive out that evil spirit?"

Mark 4:10

And when He was alone those people who gathered around Him, along with the twelve apostles, asked Him what the parables meant.

Mark 4:34

And He did not speak to them [i.e., concerning the kingdom] without using a parable, but He explained everything to His own disciples privately.

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?

General references

Bible References

Asked

Mark 4:10
And when He was alone those people who gathered around Him, along with the twelve apostles, asked Him what the parables meant.
Matthew 13:10
Jesus' disciples came and said to Him, "Why are you speaking to them [i.e., the large crowds] by using parables?"
Matthew 15:15
And Peter said to Him, "Explain the parable to us."

Why

Matthew 17:19
Then Jesus' disciples came to Him privately and said, "Why could we not drive out that evil spirit?"

General references

Matthew 17:19
Then Jesus' disciples came to Him privately and said, "Why could we not drive out that evil spirit?"
Mark 10:10
And when they were in the house, His disciples asked Him about this matter again.