In contrast with the good qualities, the evil and the indifferent ones originate not in the goodness and wisdom of God, whose substance underlies the universe, but in the blindness and willfulness of certain spiritual entities.
True "Angels of Light" are spirits, upon whom great power, wisdom and holiness have been bestowed by God.
The word Angel means "messenger", for the most frequent role of angels is that of messengers and mediators between the PLEROMA and the world of humans.
There are supposably nine orders or "choirs" of angels: Seraphim, Cherubim, Thrones, Dominions (or Dominations), Virtues, Powers, Principalities (Kingdoms), Archangels and Angels. The canonical scriptures mention three angels by name: the Archangels Michael, Gabriel and Raphael. The Gnostic church adds to these a fourth: Uriel. Gnostic scriptures mention most of these angels and add numerous others such as the rescuer of Gnostics, Eleleth, and many others.
Positive Angels help Humans by praying for them, by acting as messengers between the PLEROMA and our earthly dwelling place, and by serving as our guardian angels.
Guardian angels pray for us, protect us from spiritual harm (or at times also from physical harm).
The visitation of the Holy Virgin Mary by the Archangel Gabriel and the revelation of the Koran to Mohammed by the same Archangel are two examples of Angels who were supposed to have been seen.
There are spiritual beings who have become estranged from God and from the PLEROMA and who are thus at best unwise and at worst evil.
They are found primarily in connection with the material universe and its mental and emotional aspects, for they are primarily responsible for the creation and management of the negative realms and for the suffering and sorrow that abide therein.
Another much older name for Lucifer/Satan was Demiurge or "half-maker" because he was supposed to have taken the divine substance and fashioned out of it a world. He is the spiritual being who had become forgetful of his origins, even of God. He thinks that he is God and there is no other God before him.
In Gnostic scriptures he is called YALDABAOTH (child of chaos), SACLAS (fool) and SAMAEL (blind one). Later he was at times identified with LUCIFER or SATAN, the prince of the powers of air.
It has been said by some that not all of the images of God in the Old Testament come from the same source, and that a good many are descriptions of the Demiurge. There are some people who claim that some, such as those in the Wisdom Literature and in some Psalms, are of a much more exalted nature. In fact, there are some Gnostic teachers who held that the teachings of the Old Testament were a mixture attributable to three sources: the Demiurge, the elders of Israel and the True God.
Aside from Lucifer (Also known as Demiurge and or Satan) There is suppose to exist monstrosities of evil which populate hellish regions in association with earth. Their origins are unknown. The name of one demon mentioned in Gnostic scriptures is YACHTANABAS, although there are others.