According to medieval Christian theologians, the Angels are organized into several orders, or Angelic Choirs.
The most influential of these classifications was that put forward by Pseudo-Dionysius the Areopagite in the 4th or 5th century, in his book "The Celestial Hierarchy". However, during the Middle Ages, many schemes were proposed, some drawing on and expanding on Pseudo-Dionysius, others suggesting completely different classifications (some authors limited the number of Choirs to seven). Several other hierarchies were proposed, some in nearly inverted order. Scholars of the Middle Ages believed that angels and archangels were lowest in the order and were the only angels directly involved in the affairs of the world of men.
The authors of The Celestial Hierarchy and the Summa Theologica drew on passages from the New Testament, specifically Ephesians 1:21 and Colossians 1:16 (considered by modern scholars to be very tentative and ambiguous sources in relation to the construction of such a schema), in an attempt to reveal a schema of three Hierarchies, Spheres or Triads of angels, with each Hierarchy containing three Orders or Choirs.
From the comparative study of the Old Testament and New Testament passages, including their etymology and semantics, the above mentioned theological works (which contain variations), and esoteric Christian teachings, the descending order of rank can be inferred as following:
The Choirs in the second and third spheres, of the present hierarchical list, appear to be also united in pairs. The existence of these pairs of Orders is inferred through their etymological proximity and the apparent affinity in the description of their work-activity ():
Note, however, that several variations of the hierarchical order may be found published through the last two millennia.
The Seraphim have six wings; two covering their faces, two covering their feet, and two with which they fly. (See also Revelation 4:8.)
They have four faces: one of each a man, an ox, a lion, and an eagle. The ox-face is considered the "true face", as later on in Ezekiel the ox's face is called a cherub's face (Chapter 10). They have four conjoined wings covered with eyes, and they have ox's feet.
Cherubim are considered the elect beings for the purpose of protection. Cherubim guard the way to the tree of life in the Garden of Eden (Genesis 3:24) and the throne of God (Ezekiel 28:14-16).
Their rank among angels is uncertain but they are always categorized in the First Sphere. Some believe them to be an order or class of angels; others hold them to be a class of heavenly beings higher than angels. Cherubim are said to have perfect knowledge of God, surpassed only by the love of the Seraphim.
The Cherubim are mentioned in Genesis 3:24 ; Ezekiel 10:17–20 ; and 1 Kings 6:23–28 .
The Thrones (Gr. thronos) or Elders, also known as the Erelim, are a class of celestial beings mentioned by Paul of Tarsus in Colossians 1:16 (New Testament) and related to the throne of God the Father. They are living symbols of God's justice and authority. They come the closest of all Angels to spiritual perfection and emanate the light of God with mirror-like goodness. They, despite their greatness, are intensely humble, an attribute that allows them to dispense justice with perfect objectivity and without fear of pride or ambition. Because they are living symbols of God's justice and authority, they are called Thrones and have as one of their symbols the throne. These high celestial beings are mentioned again in Revelation 11:16
They are closely connected with the Cherubim: "When they moved, the others moved; when they stopped, the others stopped; and when they rose from the earth, the wheels rose along with them; for the spirit of the living creatures [Cherubim] was in the wheels." ().
According to the mentioned esoteric Christian teachings, the three previous Hierarchies (Seraphim, Cherubim and Ophanim [Thrones/Wheels]) have already reached liberation, thus no longer active in the work of evolution.
The Dominions are believed to look like divinely beautiful humans with a pair of feathered wings, much like the common representation of Angels, but they are physically characterized from other groups as wielding orbs of light fastened to the heads of their sceptres or on the pommel of their swords.
The term appears to be linked to the attribute "Might", from the Greek root "dunamis" in Ephesians 1:21, which is also translated as "Virtue" (probably due to the powerful nature of these high celestial beings; see quotation below). They are presented as the celestial Choir "Virtues", in the Summa Theologica, and the theological conception of these highest beings appears to describe the same high Order, in touch with God the Father, called the Thrones (Gr. thronos).
From Dionysius the Areopagite:
"The name of the holy Virtues signifies a certain powerful and unshakable virility welling forth into all their Godlike energies; not being weak and feeble for any reception of the divine Illuminations granted to it; mounting upwards in fullness of power to an assimilation with God; never falling away from the Divine Life through its own weakness, but ascending unwaveringly to the superessential Virtue which is the Source of virtue: fashioning itself, as far as it may, in virtue; perfectly turned towards the Source of virtue, and flowing forth providentially to those below it, abundantly filling them with virtue."
and Ephesians 1:21
but he may have used it to refer to the powers of nations, societies or individuals, instead of referring to angels.These celestial beings appear to collaborate, in power and authority (as implied in their etymology source), with the Principalities (Rulers). Rulers develop ideologies whereas Authorities write the documents and doctrines. Both Authorities (Powers) and Rulers (Principalities) are involved in formulating ideologies. However, Authorities are all-encompassing whereas Rulers are more focused on specific lines of thought. Authorities specialize in putting those ideas into print and in producing actual documents.
, and rulers and authorities in Ephesians 3:10
He may have been referring to the rulers and authorities of men or societies, instead of referring to angels.These celestial beings appear to collaborate, in power and authority (as implied in their etymology source), with the Powers (Authorities). Rulers develop ideologies whereas Authorities write the documents and doctrines. Both Rulers (Principalities) and Authorities (Powers) are involved in formulating ideologies. However, Rulers are more focused on specific lines of thought whereas Authorities are all-encompassing.
, and rulers and authorities in Ephesians 3:10
He may have been referring to the rulers and authorities of men or societies, instead of referring to angels.:The word archangel comes from the Greek αρχάγγελος (archangělǒs), meaning chief angel. It derives from the Greek archō, meaning to be first in political rank or power; and aggělǒs which means messenger. This suggests that they are the highest ranking angels. The word is only used twice in the New Testament: and . Only Michael and Gabriel are mentioned by name in the New Testament.
Michael is the only angel the Bible names expressly as "the" archangel. In Daniel he is referred to as "one of the chief princes". The word "prince" here is the ancient Hebrew word sar, which means: "a head person (of any rank or class), a chief, a general etc."
In most Christian traditions Gabriel is also considered an archangel, but there is no direct literal support for this assumption.
The name of the archangel Raphael appears only in the Deuterocanonical Book of Tobit (Tobias). Tobit is considered canonical by Roman Catholics (Both Eastern, and Western Rites), Eastern Orthodox and some (but few) Protestants. Raphael said to Tobias that he was "one of the seven who stand before the Lord", and it is generally believed that Michael and Gabriel are two of the other seven.
A fourth Archangel is Uriel whose name literally means "Fire of God" or "Light of God." Uriel's name is the only one not mentioned in the Bible proper but is only found in the apocrypha. He plays a most prominently role in the second Book of Esdras (fourth Books of Esdras in the Latin Vulgate). In the book he unveils seven prophecies to the prophet Ezra, after whom the book is named. He also plays a role in the apocryphal Book of Enoch, which is considered canonical only by the Ethiopian Orthodox Church.
Another possible interpretation of the seven archangels, is that the seven are the seven spirits of God that stand before the throne described in the Book of Enoch, and in the Book of Revelation.
They (The Seven Archangels) are said to be the guardian angels of nations and countries, and are concerned with the issues and events surrounding these, including politics, military matters, commerce and trade: e.g. Archangel Michael is traditionally seen as the protector of Israel and of the Ecclesia (Gr. root ekklesia from the New Testament passages), theologically equated as the Church, the forerunner of the spiritual New Israel.