In related news, I think I might try to turn the parables (and the one that I am doing on October 4th) into a book. This was not my original plan, but I have been encouraged by many people to do it.
One change that I will have to make is adding longer explanations. In the sermons I only spent about five minutes explaining the parables, but in the book I would expand these sections to be as long as the parables themselves. I think I will divide the book up into an introduction, conclusion and five sections. Each section would be on a topic and would consist of two chapters--a parable and an explanation. Here are the titles of the sections, all related to the kingdom of God:
I. Good News (The Parable of Great Banquet)
II. Awaiting Redemption (October 4th Parable)
III. Transformation (The Parable of the Good Samaritan)
IV. Faith (The Parable of the Sower)
V. Grace (The Parable of the Laborers in the Vineyard)
The Parable of the Mustard Seed would go in the introduction.