Wine is symbolical of the soul's evolution. Wine comes from the annihilation of grapes, immortality comes from the annihilation of self. The bowl of poison which is known in many mystical cults suggests also the idea of wine, but not a sweet wine, a bitter wine. When the self turns into something different from what it was before, it is like the soul being born again. This is seen in the grape turning into wine. The grape, by turning into wine, lives; as a grape it would have vanished in time.