Adam falls through eating of the tree of knowledge; in other words, sin only comes with self-consciousness, sin _is_ the conscious enjoyment of life.

And, according to this creed, it can only be overcome by abnegation, by the denial of the will to live.

Accordingly, Christ enters the world, and, representing Humanity, as Adam had done, saves the world by denial, of Himself, even to death.

The other allegory is that of Prometheus.

He also represents mankind, and his stealing of the fire means man's acquirement of a conscious soul, whereby he makes himself capable of sin.