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