God takes human birth again and again upon this earth, because there is a work to do and a road to be opened towards the future. Earth nature is full of ignorance and impurity. Every time the Divine takes a human form, it works to prepare the earth nature and carry it one more step towards the goal. Avatars destroy the old impurities and bring down the new truths.
A colossal black serpent guards the treasures of the vital world. It only yields to those who master humanity’s sexual impulse.