The divisive and separative function of the sword, which is of such importance in alchemy, is prefigured in the flaming sword of the angel that separated our first parents from paradise.
Jung establishes the flaming sword as the archetypal image of psychic separation, tracing its alchemical significance back through Gnostic sources where it embodies the generative, fiery pneuma that is simultaneously the ground of existence and the agent of division.
, Psychology and Religion: West and East, 1958thesis