This chapter includes a riddle. A riddle is a type of metaphorical speech (language that uses pictures and comparisons). It both hides and shows the meaning at the same time.
The chapter is also a fable. A fable is a story that teaches a moral lesson. It often tells the lesson through plants or animals instead of people.
This creative setting creates distance between the story and real life. That distance helps the listener receive the message. It lowers resistance to a message that may be hard or unpleasant to hear.