As one of my rabbis taught us in seminary, the Sadducees were very sad, you see...
2 other enlightening books are ‘Understanding the difficult words of Jesus’ & “New light on the difficult words of Jesus’ by David Bivin are also great sources for understanding the parables Yah’shua spoke. I found it quite interesting that all the parables I have cross referenced thus far were taken from Jewish rabbinic parable literature that Yah'shua had obviously studied and had memorized.