The Kabbalah, also known as The Light Kaballah, is a storage unit for the ten Angels. It initiates a great power when all Angels are stored inside of it. When combined with the Reverse Kabbalah, it can initiate Armaggedon through Shin. The Angels have lasting rivalries with the demons.
Along with the Reverse Kabbalah, Alkaid Spirit used the two to rule the world in the past.