Why Was Cain's Offering Not Accepted?

An Early Tragedy

The story of Cain and Abel is one of the very first tragedies to befall humankind – the kind of story that playwrights and novelists can only emulate. The murder of one’s own brother is such an onerous idea that the story is well remembered as a showcase of where unrestrained jealousy leads. But the original cause of jealousy is, according to the Bible text, wrapped up in God’s regard for Abel’s offering and God’s disregard for Cain’s. What exactly was wrong with Cain’s offering to God?