The book illustrates the significance of the singing of angels, tracing its importance from the Old Testament through liturgical, theological, and art history to the present day. Theological reflections highlight the relevance of the topic, particularly in the approaches of Johann Hafner and Peter Sloterdijk. The perspective on angels mitigates the anthropocentrism of Christian theology and reveals God's creation as an unfathomable realm of reality that reflects God's holiness.