The Greek verb diasapheo means to make clear, explain thoroughly, or declare with clarity. From saphos (clear, plain), the dia prefix intensifies the thoroughness of the explanation.
When the disciples came to Jesus asking for an explanation of the Parable of the Weeds (Matthew 13:36), they requested that he diasapheo — make it thoroughly plain. This captures the discipling relationship: the crowd receives parables, but disciples receive clear explanation. Jesus is both the speaker of mysteries and the revealer of their meaning. Access to the King means access to explanation.