The ARCHANGELS are called the great heralds of good news, announcing the great and most glorious. Their service (as the great Dionysius the Aeropagite says) consists in revealing prophecies, knowledge, and understanding of God's will which they receive from the higher orders of angels and announce to the lower order, i.e. the angels, and through them, to men. St Gregory the Dialogist says that the archangels strengthen people in the holy faith, enlightening their mind with the light of knowledge of the holy Gospel and revealing the mysteries of devout faith.