The list of nine choirs of angels goes back to the fourth century AD. Tradition identifies these choirs in ascending order as angels (many references in the Old Testament and New Testament), archangels (Jude 6:9 and 1 Thessalonians 4:16), principalities (Romans 8:38 and Colossians 1:16), powers (same references), virtues, dominations (Colossians 1:16), thrones (Colossians 1:16), cherubim (plural of cherub, Genesis 3:24; Exodus 25:18) and seraphim (plural of seraph, Isaiah 6:7).
Although no Scripture text confirms this, it is often said that Satan belonged to the seraphim (those closest to God) but lost that position through his pride and disobedience. Non-scriptural texts suggest that Satan was originally among the highest of the angels.
In his Letter to the Colossians, St. Paul warned the Christians there against trying to enlist angels to guarantee a particular outcome of events. Because angels are diversified signs of God’s providence, they are never a means of manipulating God for our advantage.
In sections 328 through 336, the Catechism of the Catholic Church emphasizes that angels are God’s servants and messengers, reminding us of the “blessed company” we are intended to share with them. The Catechism does not list the choirs of angels, their duties, number, or creation.