Parable vs. Allegory
Yes it Necessary to FIRST establish a ground of communication by clearing the ear canals of the hearers..
We have established that in fact A Parable is a story that encrypts its Messages and now we will Discuss the Allegory.The simple little story with moral and spiritual meaning.What eles is there to discuss. That's is all it is. Period
Now back to the Parable..JESUS quotes the words of the Prophet Isaiah
Go to this poeple and say,Hear and understand not,See Ye indeed, and perceive not.Make the heart of this people fat, and make their ears heavey,and SHUT their eyes: lest their sins be forgiven them. There were Certain Men(" Sworn Enemies of our Lord ")Possers, Imposters, Who were pretending to be the people of god. But couldn't understand His speech.
Christ stated taht His sheep would hear, know, and understand his message. thus the word would leave the stragelers behind..unforgiven