The abhidharma worldview

The abhidharma worldview … analyzed humans and their surrounding world in detail. First, the world is divided into three realms or the triple world: (1) the desire realm in which individuals exist with desires for sex and food, (2) the form realm in which individuals have left behind the above two desires but are not free from material restrictions, (3) the formless realm as spiritual since it is free from material restrictions. It is held that the desire realm contains the six paths (or five paths if asura are not included): hell-dwellers, hungry ghosts, animals, demigods called fighting demons (asuras), and humans. There are also the six heavens of the desire realm: Heaven of the Four Heavenly Kings, Heaven of the Thirty-three Gods, Yāma or Heaven of Time, Tuṣita or Heaven of Contentment, Heaven of Delight in Creation, and Heaven of Controlling the Creation of Others. In the form realm are seventeen heavens. First is the group of the heavens of the first meditative concentration: Heaven of Brahma’s Retainers, Heaven of Brahma’s Ministers, and Great Brahma’s Heaven. The next grouping is the heavens of the second meditative concentration: Heaven of Lesser Radiance, Heaven of Immeasurable Radiance, and Heaven of the Ultimate Radiance. The third grouping is the heavens of the third meditative concentration: Heaven of Lesser Purity, Heaven of Immeasurable Purity, Heaven of Pervasive Purity. The last grouping is the heavens of the fourth meditative concentration: Cloudless Heaven, Heaven of Meritorious Birth, Heaven of Extensive Fruition, Heaven Free from Afflictions, Heaven Without Torment, Heaven of Perfect Form, Heaven of Perfect Vision, and the Highest Heaven. Lastly in the formless realm are four heavens: Heaven of Infinite Space, Heaven of Infinite Consciousness, Heaven of Nothingness, and Heaven of Neither Perception nor Non-Perception.

History and Teachings of Nichiren Buddhism, p 35