Jesus points out is that there is something within us that has an unavoidable connection to cause and effect. Good trees and bad trees symbolize the state of our mind that is directly related to the quality of our actions. 

God granted the priesthood to Aaron and his sons with the ritual of atonement. This was the removal of all their sins and transgressions, meaning there is no sin that is unremovable, according to the Bible

The story about the serpent and the woman is about our struggle to rise above our physically-oriented perception of reality and our desire to make things our own.

As the original material from the man for the creation of the woman was a rib, which protects his heart, the creation of the woman symbolized God granting humanity what they desire the most in their hearts: a certain sense of ownership of their life…