Cross reference
Matthew 13:34
34 All these things spake Jesus in parables unto the multitudes; and without a parable spake he nothing unto them:
Mark 4:33-34
33 And with many such parables spake he the word unto them, as they were able to hear it;
34 and without a parable spake he not unto them: but privately to his own disciples he expounded all things.
John 16:25
25 These things have I spoken unto you in dark sayings: the hour cometh, when I shall no more speak unto you in dark sayings, but shall tell you plainly of the Father.
Matthew 13:13
13 Therefore speak I to them in parables; because seeing they see not, and hearing they hear not, neither do they understand.