Charles Ellicott Commentary Matthew 13:34

"All these things spake Jesus in parables unto the multitudes; and without a parable spake he nothing unto them:" — Matthew 13:34 (ASV)

Without a parable spake he not unto them—The words are, of course, limited by the context to this occasion, but it is noticeable from this time forward that parables are the dominant element in His teaching to the multitude, and that the mysteries of the kingdom are reserved for the more esoteric instruction of the disciples.