From: Hildegard of Bingen’s Book of Divine Works, With Letters and Songs
On the topmost part of the right wing’s curve you can see the head of an eagle with fiery eyes. In those eyes a choir of angels shines as in a mirror: When people subject themselves to God on the height of triumphant subservience and overcome Satan, they will advance and enjoy the bliss of divine protection. And if they are inflamed by the Holy Spirit and lift up their hearts and turn their eyes to God, the blessed spirits will appear within them in total brightness and carry up to God the surrender of those individuals’ hearts. For spiritual people, who in the devotion of their hearts often gaze at God like the angels, are marked with an eagle. Therefore, the blessed spirits who constantly gaze at God rejoice in the good deeds of the just. They display these deeds to God by their own being. And thus they persist in praising God and never cease to do so, for they can never exhaust the divine fullness. For who could ever count the immeasurable works God accomplishes in the power of divine omnipotence? No one! The brilliance of many reflections in a mirror is characteristic of the angels. Within this brilliance the angels gaze at God. For no one acts and has such power as God, and no one is like the Deity. For God is not subject to such a thing as time.