By Msgr. Charles Pope - The conclusion of the Book of Tobit features the Archangel Raphael revealing himself to Tobit and others and explaining his ministry to them. This post I write is not a full angelology, it is just a grateful reflection for God, his angels and his creation. Book-length treatments are necessary for a good angelology. If you are looking for a readable, and brief account of angelology I might recommend The Angels and Their Mission According to the Fathers of the Church, by Cardinal Jean Danielou.