Matthew 13:10
And the disciples having come near, said to him, Why speakest thou to them in parables?
Mark 4:10
And when he was alone, they about him with the twelve asked him of the parable.
Mark 4:33-34
And with many such parables spake he the word to them, as they were able to hear.
Treasury of Scripture Knowledge
Summary
And the disciples came, and said unto him, Why speakest thou unto them in parables?