Knowledge comes directly from Scripture pursuant to the doctrine of Private Judgment.
Knowledge comes from the chain of being pursuant to the doctrine of the Celestial and Angelic hierarchies.
Reality is physical and good per se as physical and is as it generally appears from our senses.
Physical Reality is a malicious illusion in which our souls are trapped, but through the ascetic disciplines of the church we may be liberated from it.
Sin is any want of conformity or transgression of the law of Elohim.
Sin is attachment to the physical reality.
Since physical reality is good, the caste/distinctions in physical reality should be acknowledged and established in law.
Since physical reality is a malicious imposition upon the pure soul the caste/distinctions in physical reality should not be acknowledged and established in law, but society should establish equality among its citizens as at the level of soul we are all the same divine spark.