What does Cain's heresy mean?

Cain's heresy refers to a theological concept often associated with the biblical figure Cain, who is known for murdering his brother Abel out of jealousy. It symbolizes the rejection of divine authority and moral order, as Cain's actions stem from pride and resentment rather than a commitment to righteousness. In a broader context, the term can denote any belief or action that defies established moral or religious principles, emphasizing themes of rebellion and the consequences of sin.