The principal source of our knowledge of the holy angels is from Sacred Scripture. The angels are found in hundreds of citations in the Bible. Yet much teaching on the angels can also be found in the magisterial writings of the Church. Below we provide some of the more important sources for the Church's teaching on the angels.

Catechism of the Catholic Church nn. 328-354
Compendium of the Catechism qq. 59-64, 74, p. 178
Directory on Popular Piety and the Liturgy nn. 212-217
John Paul II: Gen. Aud. July 9, 1986 ~ Angels are Spirits
John Paul II: Gen. Aud. July 23, 1986 ~ Trial of the Angels
John Paul II: Gen. Aud. July 30, 1986 ~ Tasks of the Angels
John Paul II: Gen. Aud. August 6, 1986 ~ Nature and Role
John Paul II: Gen. Aud. August 13, 1986 ~ The Fallen Angels
John Paul II: Gen. Aud. August 30, 1986 ~ The Victory of God
John Paul II: Monte Gargano, May 24, 1987.