As you would expect I am of the opinion ALL inspiration is of human origin, including that which inspired the writing of the Bible.

My problem with such a suggestion is that the teaching that we are told comes from Jesus is so far removed from the culture and practices of the people amongst whom he lived -let alone the way in which many other cultures of the time thought - that it would have been impossible for humans to have come up with them.  They weren't incremental changes to thinking, they were dramatic leaps.