“We believe in the communion of all the faithful of Christ, those who are pilgrims on earth, the dead who are being purified, and the blessed in heaven, all together forming one Church; and we believe that in this communion, the merciful love of God and his saints is always attentive to our prayers.”
Article 962 of the Catechism of the Catholic Church
“In the meantime, the whole life of the Church benefits from the mysterious and powerful help of angels.”
Article 334 of the Catechism of the Catholic Church