The 22 levels from earth to sky refer to the development of the Wish for Budhahood (Bodhichitta), from the initial intention in a baby Bodhisattva to the full Bodhichitta in the mind of a Buddha. This list of 22 comes from the Ornament of Realizations (Abhisamayalankara) by Arya Asanga which is one of the Five Great Books of Maitreya—The Future Buddha. They were taught by Maitreya to Arya Asanga in Maitreya’s heaven and then he brought them back to this world.
The 22 levels from earth to sky refer to the development of the Wish for Budhahood (Bodhichitta), from the initial intention in a baby Bodhisattva to the full Bodhichitta in the mind of a Buddha. This list of 22 comes from the Ornament of Realizations (Abhisamayalankara) by Arya Asanga which is one of the Five Great Books of Maitreya—The Future Buddha. They were taught by Maitreya to Arya Asanga in Maitreya’s heaven and then he brought them back to this world.
In this series of classes, Geshe Michael dives deeper into the subject of protection using a famous book called The Necklace of Understanding (Abhisamayalankara), which was revealed by Maitreya to Arya Asanga, in which he teaches about what it means to take refuge by covering the following three topics: 1. What it means to go for refuge, 2. Where you go for refuge (The Three Jewels), and 3. The Four Bodies of a Buddha.