Life by its nature of being real aware existence is eternal. What is limited is the duration of the body with which life gets identified. The identification with a body is due desires of the identity "I am" which life creates. The body and identification with it in any number of bodily birth is governed by predispositions and latent tendencies appearing in mind. They are the result also of bodily actions with strong desires in the past. Gods do not have desires that bind and therefore are free of predispositions and latent tendencies; there is no karma for them.