Hinduism

He further tortured and sacrificed and thus fire, water and food was generated. In sum, he is identified with the great horse sacrifice and creates the world as the means to offer him in this sacrifice.
             Prajapati Creates Agni: Satapatha-Brahmana.
             Here is another sacred narrative concerning the Vedic and Brahmanic deity Prajapati, who first creates the sacrificial fire, Agni, and then in order to escape being devoured by this fire he creates the offerings of the sacrifice. The Yajurveda consists of hymns for sacrifices. He generated Agni from his mouth, creating himself first of the gods; for him who goes first, they say that he goes at the head. He made sacrifices and offerings but he hesitated in his offerings whether he should offer or not, but his own (sva) greatness that had spoken (aha) that he should offer and so milk or ghee or oil is offered with svaha. Prajapati had performed offerings, reproduced himself, and saved himself from Agni, Death, as he was about to devour him. And so whosoever offers the Agnihotra reproduces him by offspring. .
             Visnu Traditions: Rgveda and Satapatha-Brahmana .
             Visnu, while being one of the most important gods in classical Hinduism, already appears in the Vedic and Brahmanic literatures as a solar deity. In the Rgveda text, he is the sky-god who traverses the world in three steps. The Avatars, incarnations of Visnu, assume a prominent place in the Epics, and more so in the Puranas. The first three, Matsya (fish), Kurma (tortoise) and Varaha (boar) have a cosmic character and are foreshadowed in the hymns of the Vedas. The fourth incarnation, Nrsimha (man-lion), seems to belong to a later age, when the worship of Visnu had become established. The fifth, Vamana (dwarf), whose three strides deprived the Asuras of the domination of heaven and earth, is in character anterior to the fourth Avatara and the three strides are attributed to Visnu in the Vedic text as Urukrama.