Provides a readable treatment of the mission of angels in the economy of salvation. Begins by following a historical order, dealing with the angels in the world before the Incarnation, during our Lord's earthly life, and as presiding over the growth and development of the Church. Chapters on the guardian angels, on the angels and the sacraments, the spiritual life, death, the second coming. Danielou's work is notable for the synthesis which it achieves between the teaching of the Church Fathers and later theological speculation on the angels.