Mahavira preached that the nature of existence is cyclic, where the jiva (soul) of beings is reborn after death in one of the triloka – heavenly, hellish, or earthly realms of existence and suffering. According to Mahavira, human beings are reborn, depending on one's karma (actions) as a human, animal, element, microbe, and other forms, on earth or in a heavenly or hellish state of existence. Nothing is permanent, everyone, including gods, demons and beings on the earthly realms, die and are reborn again based on their karma merits and demerits. It is the Jina who have reached Kevala Jnana who are not reborn again, and attain the Siddhaloka or the "Realm of the Perfected Ones".