—Rigveda, i. 32.
A post-Vedic version of the encounter between Indra and the demon Vritra is given in the “Vana Parva” section of Mahābhārata. Although it is coloured by the change which, in the process of time, passed over the religious beliefs of the Aryans, it retains some features of the original myth which are absent in the Vedic hymns. It should be understood that, at the period referred to, the belief obtained that the gods derived their powers from the saintly Rishis,[44] who fed them with sacrifices and underwent terrible penances, which enabled them to support or destroy the Universe at will.
It is related that in the Krita Age (the first Age of the Universe) a host of Dānāvas (giants and demons) were so strongly armed that they were invincible in battle. They selected the dragon Vritra as their leader, and waged war against the gods, whom they scattered in all directions.
Realizing that they could not regain their power until they accomplished the death of Vritra, the Celestials appeared before their Grandsire, the Supreme Being, Brahma, the incarnation of the Soul of the Universe. Brahma instructed them to obtain the bones of a Rishi named Dadhicha, from which to construct a demon-slaying weapon. So the gods visited the Rishi and bowed down before him, and begged the boon according to Brahma's advice.
Said Dadhicha: “O ye gods, I will renounce my body for your benefit.”
Then the Rishi gave up his life, and from his bones the artisan god, Twashtri, shaped Indra's great weapon, which is called Vajra.[45]
Twashtri spake to Indra and said: “With this, the best of weapons, O exalted one, reduce that fierce foe of the gods to ashes! And, having slain the foe, rule thou happily the entire domain of heaven, O chief of the celestials, with those that follow thee.”[46]
Then Indra led the gods against the mighty host. They found that Vritra was surrounded by dreaded Danavas, who resembled mountain peaks. A terrible conflict was waged, but once again the gods were put to flight. Then Indra saw Vritra growing bolder, and he became dejected. But the Supreme Being protected him and the gods endowed him with their strength, so that he became mightier than before. Thereupon Vritra was enraged, and roared loudly and fiercely, so that the heavens shook and the earth trembled with fear. Deeply agitated, Indra flung his divine weapon, which slew the leader of the Danavas. But Indra, thinking the demon was still alive, fled from the field in terror to seek shelter in a lake. The Celestials, however, perceived that Vritra had been slain, and they rejoiced greatly and shouted the praises of Indra. Then, rallying once more, the gods attacked the panic-stricken Danavas, who turned and fled to the depths of ocean. There in the fathomless darkness they assembled together, and began to plot how they would accomplish the destruction of the three worlds.[47]
At length the dread conspirators resolved to destroy all the Rishis who were possessed of knowledge and ascetic virtue, because the world was supported by them. So they made the ocean their abode, raising billows high as hills for their protection, and they began to issue forth from their fortress to make attacks on the mighty saints.
In the Babylonian Story of Creation the female dragon Tiawath (Tiamat), whose name signifies “the sea”,[47] desired to possess the world, and plotted against the gods with her horde of giant serpents, “raging dogs, scorpion men, fish men, and other terrible beings”. The gods then selected Belus (Bel-Merodach) as their leader, and proclaimed him their king. He slew Tiawath and covered the heavens with one part of her body, and fashioned the earth with the other half. Then he set the moon and the stars in the sky, and afterwards created man: “he divided the darkness, separated the heavens from the earth, and reduced the universe to order”.[48] The sun was the offspring of the moon.