The doctrine of monotheism was formally expressed in the period immediately before and during the Exile, in Deuteronomy[[16]] and Isaiah;[[17]] and at the same time we find angels prominent in Ezekiel who, as a prophet of the Exile, may have been influenced by the hierarchy of supernatural beings in the Babylonian religion, and perhaps even by the angelology of Zoroastrianism.[[18]] Ezekiel gives elaborate descriptions of cherubim;[[19]] and in one of his visions he sees seven angels execute the judgment of God upon Jerusalem.[[20]] As in Genesis they are styled "men," mal'akh for "angel" does not occur in Ezekiel. Somewhat later, in the visions of Zechariah, angels play a great part; they are sometimes spoken of as "men," sometimes as mal'akh, and the Mal'akh Yahweh seems to hold a certain primacy among them.[[21]] Satan also appears to prosecute (so to speak) the High Priest before the divine tribunal.[[22]] Similarly in Job the bne Elohim, sons of God, appear as attendants of God, and amongst them Satan, still in his rôle of public prosecutor, the defendant being Job.[[23]] Occasional references to "angels" occur in the Psalter;[[24]] they appear as ministers of God.
In Ps. lxxviii. 49 the "evil angels" of A. V. conveys a false impression; it should be "angels of evil," as R. V., i.e. angels who inflict chastisement as ministers of God.
The seven angels of Ezekiel may be compared with the seven eyes of Yahweh in Zech. iii. 9, iv. 10. The latter have been connected by Ewald and others with the later doctrine of seven chief angels,[[25]] parallel to and influenced by the Ameshaspentas (Amesha Spenta), or seven great spirits of the Persian mythology, but the connexion is doubtful.
In the Priestly Code, c. 400 B.C., there is no reference to angels apart from the possible suggestion in the ambiguous plural in Genesis i. 26.
During the Persian and Greek periods the doctrine of angels underwent a great development, partly, at any rate, under foreign influences. In Daniel, c. 160 B.C., angels, usually spoken of as "men" or "princes," appear as guardians or champions of the nations; grades are implied, there are "princes" and "chief" or "great princes"; and the names of some angels are known, Gabriel, Michael; the latter is pre-eminent,[[26]] he is the guardian of Judah. Again in Tobit a leading part is played by Raphael, "one of the seven holy angels."[[27]]
In Tobit, too, we find the idea of the demon or evil angel. In the canonical Old Testament angels may inflict suffering as ministers of God, and Satan may act as accuser or tempter; but they appear as subordinate to God, fulfilling His will; and not as morally evil. The statement[[28]] that God "charged His angels with folly" applies to all angels. In Daniel the princes or guardian angels of the heathen nations oppose Michael the guardian angel of Judah. But in Tobit we find Asmodaeus the evil demon, τὸ πονηρὸν δαιμόνιον, who strangles Sarah's husbands, and also a general reference to "a devil or evil spirit," πνεῦμα.[[29]] The Fall of the Angels is not properly a scriptural doctrine, though it is based on Gen. vi. 2, as interpreted by the Book of Enoch. It is true that the bnē Elohim of that chapter are subordinate superhuman beings (cf. above), but they belong to a different order of thought from the angels of Judaism and of Christian doctrine; and the passage in no way suggests that the bne Elohim suffered any loss of status through their act.
The guardian angels of the nations in Daniel probably represent the gods of the heathen, and we have there the first step of the process by which these gods became evil angels, an idea expanded by Milton in Paradise Lost. The development of the doctrine of an organized hierarchy of angels belongs to the Jewish literature of the period 200 B.C. to A.D. 100. In Jewish apocalypses especially, the imagination ran riot on the rank, classes and names of angels; and such works as the various books of Enoch and the Ascension of Isaiah supply much information on this subject.
In the New Testament angels appear frequently as the ministers of God and the agents of revelation;[[30]] and Our Lord speaks of angels as fulfilling such functions,[[31]] implying in one saying that they neither marry nor are given in marriage.[[32]] Naturally angels are most prominent in the Apocalypse. The New Testament takes little interest in the idea of the angelic hierarchy, but there are traces of the doctrine. The distinction of good and bad angels is recognized; we have names, Gabriel,[[33]] and the evil angels Abaddon or Apollyon,[[34]] Beelzebub.[[35]] and Satan;[[36]] ranks are implied, archangels,[[37]] principalities and powers,[[38]] thrones and dominions.[[39]] Angels occur in groups of four or seven.[[40]] In Rev. i.-iii. we meet with the "Angels" of the Seven Churches of Asia Minor. These are probably guardian angels, standing to the churches in the same relation that the "princes" in Daniel stand to the nations; practically the "angels" are personifications of the churches. A less likely view is that the "angels" are the human representatives of the churches, the bishops or chief presbyters. There seems, however, no parallel to such a use of "angel," and it is doubtful whether the monarchical government of churches was fully developed when the Apocalypse was written.
Later Jewish and Christian speculation followed on the lines of the angelology of the earlier apocalypses; and angels play an important part in Gnostic systems and in the Jewish Midrashim and the Kabbala. Religious thought about the angels during the middle ages was much influenced by the theory of the angelic hierarchy set forth in the De Hierarchia Celesti, written in the 5th century in the name of Dionysius the Areopagite and passing for his. The creeds and confessions do not formulate any authoritative doctrine of angels; and modern rationalism has tended to deny the existence of such beings, or to regard the subject as one on which we can have no certain knowledge. The principle of continuity, however, seems to require the existence of beings intermediate between man and God.
The Old Testament says nothing about the origin of angels; but the Book of Jubilees and the Slavonic Enoch describe their creation; and, according to Col. i. 16, the angels were created in, unto and through Christ.