Many would like to claim that we really don't know what Jesus said. However you cannot have it both ways.
If Jesus got it wrong on creation, on Noah, on historical statements, etc., what makes us think He got it right on:
Forgiveness of sins.
Heaven
or anything else He said.
If God wrote a book that serious, sincere students could not understand and benefit from, what is the point?
PS - I am sure Jesus has often been misquoted and misinterpreted, and that I have been the culprit on more occasions than I would like.