"Host of heaven" is a phrase frequently used in religious texts to refer to angels or celestial beings. Synonyms for this phrase include "heavenly army," "celestial host," "angelic realm," "divine assembly," "messenger spirits," and "heavenly choir." These synonyms emphasize the powerful and otherworldly nature of the celestial beings they describe, and are often used in hymns and prayers to invoke their aid and guidance. The variety of terms used to describe these celestial beings also highlights the many different interpretations and beliefs about the nature of angels and their role in the universe.