The Hosts of Heaven was a cancelled sourcebook for Mage: The Sorcerers Crusade.
Summary[]
From the White Wolf Game Studio 2001 Catalog, July to December:
To Talk to Angels
If Reason is the sun and Magick is the moon, then Faith is the starlit night - points of light burning steadfast against the darkness. From Europe, Arabia and even Jerusalem itself come hawk and dove, singer and scholar. Each one answering a call to take up the Lord's mantle and serve. From monastery to merchant lodge, in the fields and in the universities, true believers battle against chaos and suffering.
Holy Guardians
Hosts of Heaven explores the role of faith and magick in Mage: The Sorcerers Crusade. You get expanded information on the faith-based Traditions, and the deep secrets of the Gabrielites and other mystic societies. Also included are angelic conversation, heavenly creatures, holy ritual and ceremonial magick. - pg. 30