Cross reference
Matthew 13:34
34 Jesus spoke all these things in parables to the multitudes; and without a parable, he didn't speak to them,
Mark 4:33-34
33 With many such parables he spoke the word to them, as they were able to hear it.
34 Without a parable he didn't speak to them; but privately to his own disciples he explained all things.
John 16:25
25 I have spoken these things to you in figures of speech. But the time is coming when I will no more speak to you in figures of speech, but will tell you plainly about the Father.
Matthew 13:13
13 Therefore I speak to them in parables, because seeing they don't see, and hearing, they don't hear, neither do they understand.