It is the fruit of the tree of the knowledge of good and evil, which means that it brings awareness of the opposites, the specific feature of consciousness. Thus, according to this myth… consciousness is the original sin, the original hybris.
Edinger identifies the Tree’s fruit as the archetypal symbol of consciousness-as-awareness-of-opposites, reading the Fall as the mythic encoding of ego-birth and the estrangement from pre-conscious wholeness.
, Ego and Archetype: Individuation and the Religious Function of the Psyche, 1972thesis