Excerpt from the book Meditations on Christian Dogma, Volume I - In these two meditations we consider the second and third levels of angels in the hierarchy of the Heavenly Kingdom. In the second hierarchy are the Dominations, the Virtues, and the Powers. In the third hierarchy are the Principalities, the Archangels, and the Angels. Each class of angel in the hierarchy serves God in a particular way and all are more beautiful and intelligent than we can imagine.