1. The teachings are here. Someone came up with this theology, these parables, and this Sermon on the Mount.
While the speeches are unique, the teachings are not. Those values taught are an eclectic mix of various sects that were about. Some of which seems to be from the Essenes, others from the Hillel school of pharisaic thought.
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And the people who wrote the specific gospels were unable to write something unique to promote their specific theology?
Many of the lessons are contradictory. Some show a Jesus of peace, others , if you read it plain, show a more militant Jesus (which of course, is interpreted Spiruitually, rather than literally).
There is a big difference between 'Go and sin no more', and "I come not for peace by with a sword".
You also have to , in your musings, take into account the gnostic point of view of Jesus. There are so many contradictory beliefs about Jesus, and then there was the 'filter' of convention that the writings went through (via the Council of Nicea.
Because of the various different view points in the surviving texts, I am more likely to see the Jesus presented is a composite of a number of people,sects.