28 And when he had come into the house, his disciples asked him privately, Why could not we cast him out?
Mark 9:28 Cross References - Webster
Matthew 13:10
10 And the disciples came, and said to him, Why speakest thou to them in parables?
Matthew 13:36
36 Then Jesus sent the multitude away, and went into the house: and his disciples came to him, saying, Declare to us the parable of the tares of the field.
Matthew 15:15
15 Then answered Peter and said to him, Declare to us this parable.
Matthew 17:19-20
19 Then came the disciples to Jesus apart, and said, Why could not we cast him out?
20 And Jesus said to them, Because of your unbelief: for verily I say to you, If ye have faith as a grain of mustard-seed, ye shall say to this mountain, Remove hence to yonder place, and it shall remove; and nothing shall be impossible to you.
Mark 4:10
10 And when he was alone, they that were about him, with the twelve, asked of him the parable.
Mark 4:34
34 But without a parable he spoke not to them: and when they were alone, he expounded all things to his disciples.
Mark 7:17
17 And when he had entered into the house from the people, his disciples asked him concerning the parable.