asked
Mark 4:10
And when He was alone, those who were about Him with the twelve asked Him about the parable.
Mark 4:34
but without a parable spoke 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, "Explain unto us the parable of the tares of the field."
Matthew 15:15
Then answered Peter and said unto Him, "Explain to us this parable."
Why
Matthew 17:19
Then came the disciples to Jesus apart and said, "Why could we not 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.