The fact that the myth was assimilated into Christianity by interpretation is proof, first of all, of the myth's vitality; but it also proves the vitality of Christianity, which was able to interpret and assimilate so many myths.
Jung identifies vitality as the criterion by which a living tradition is distinguished from a dead one — its capacity to absorb and transform myth across time.
, Mysterium Coniunctionis: An Inquiry into the Separation and Synthesis of Psychic Opposites in Alchemy, 1955thesis