Feast of Sts. Michael, Gabriel, and Raphael, Archangels

The liturgy celebrates the feast of these three archangels who are venerated in the tradition of the Church. Michael (Who is like God) was the archangel who fought against Satan and all his evil angels, defending all the friends of God. He is the protector of all humanity from the snares of the devil. Gabriel (Strength of God) announced to Zachariah the forthcoming birth of John the Baptist, and to Mary, the birth of Jesus. His greeting to the Virgin, "Hail, full of grace," is one of the most familiar and frequent prayers of the Christian people. Raphael (Medicine of God) is the archangel who took care of Tobias on his journey.

The Catechism of the Catholic Church teaches us that, "[T]he existence of the spiritual, non-corporeal beings that Sacred Scripture usually calls "angels" is a truth of faith. The witness of Scripture is as clear as the unanimity of Tradition."
Angels are pure, created spirits. The name angel means servant or messenger of God. Angels are celestial or heavenly beings, on a higher order than human beings. Angels have no bodies and do not depend on matter for their existence or activity. They are distinct from saints, which men can become. Angels have intellect and will and are immortal. They are a vast multitude, but each is an individual person. Archangels are one of the nine choirs of angels listed in the Bible. In ascending order, the choirs or classes are 1) Angels, 2) Archangels, 3) Principalities, 4) Powers, 5) Virtues, 6) Dominations, 7) Thrones, 8) Cherubim, and 9) Seraphim.

St. Michael

The name of the archangel Michael means, in Hebrew, who is like unto God? and he is also known as "the prince of the heavenly host." He is usually pictured as a strong warrior, dressed in armor and wearing sandals. His name appears in Scripture four times, twice in the Book of Daniel, and once each in the Epistle of St. Jude and the Book of Revelation. From Revelation we learn of the battle in heaven, with St. Michael and his angels combatting Lucifer and the other fallen angels (or devils). We invoke St. Michael to help us in our fight against Satan; to rescue souls from Satan, especially at the hour of death; to be the champion of the Jews in the Old Testament and now Christians; and to bring souls to judgment.

St. Gabriel

St. Gabriel's name means "God is my strength". Biblically he appears three times as a messenger. He had been sent to Daniel to explain a vision concerning the Messiah. He appeared to Zachary when he was offering incense in the Temple, to foretell the birth of his son, St. John the Baptist. St. Gabriel is most known as the angel chosen by God to be the messenger of the Annunciation, to announce to mankind the mystery of the Incarnation.
The angel's salutation to our Lady, so simple and yet so full of meaning, Hail Mary, full of grace, has become the constant and familiar prayer of all Christian people.

St. Raphael

Our knowledge of the Archangel Raphael comes to us from the book of Tobit. His mission as wonderful healer and fellow traveler with the youthful Tobias has caused him to be invoked for journeys and at critical moments in life. Tradition also holds that Raphael is the angel that stirred the waters at the healing sheep pool in Bethesda. His name means "God has healed".

Prayer:
St. Michael the Archangel, defend us in battle; be our defense against the wickedness and snares of the devil. May God rebuke him, we humbly pray; and do thou, O prince of the heavenly host, by the power of God, cast into hell Satan and all the other evil spirits who roam about the world, seeking the ruin of souls. Amen.

Prayer:
Blessed Saint Gabriel, Archangel We beseech you to intercede for us at the throne of divine mercy: As you announced the mystery of the Incarnation to Mary, so through your prayers may we receive strength of faith and courage of spirit, and thus find favor with God and redemption through Christ Our Lord. May we sing the praise of God our Savior with the angels and saints in heaven forever and ever. Amen.

Prayer:
Blessed Saint Raphael, Archangel, we beseech you to help us in all our needs and trials of this life, as you, through the power of God, didst restore sight and gave guidance to young Tobit. We humbly seek your aid and intercession, that our souls may be healed, our bodies protected from all ills, and that through divine grace we may become fit to dwell in the eternal Glory of God in heaven. Amen.

From catholicculture.org