Rev 12:9

“At present, however, I have simply been led to mention him, that thou mightest know that all those who in any way corrupt the truth, and injuriously affect the preaching of the Church, are the disciples and successors of Simon Magus of Samaria. Although they do not confess the name of their master, in order all the more to seduce others, yet they do teach his doctrines. They set forth, indeed, the name of Christ Jesus as a sort of lure, but in various ways they introduce the impieties of Simon; and thus they destroy multitudes, wickedly disseminating their own doctrines by the use of a good name, and, through means of its sweetness and beauty, extending to their hearers the bitter and malignant poison of the serpent, the great author of apostasy.”

“For as the serpent beguiled Eve, by promising her what he had not himself, so also do these men, by pretending [to possess] superior knowledge, and [to be acquainted with] ineffable mysteries; and, by promising that admittance which they speak of as taking place within the Pleroma, plunge those that believe them into death, rendering them apostates from Him who made them. And at that time, indeed, the apostate angel, having effected the disobedience of mankind by means of the serpent, imagined that he escaped the notice of the Lord; wherefore God assigned him the form and name [of a serpent]. But now, since the last times are [come upon us], evil is spread abroad among men, which not only renders them apostates, but by many machinations does [the devil] raise up blasphemers against the Creator, namely, by means of all the heretics already mentioned. For all these, although they issue forth from diverse regions, and promulgate different [opinions], do nevertheless concur in the same blasphemous design, wounding [men] unto death, by teaching blasphemy against God our Maker and Supporter, and derogating from the salvation of man. Now man is a mixed organization of soul and flesh, who was formed after the likeness of God, and moulded by His hands, that is, by the Son and Holy Spirit, to whom also He said, "Let Us make man." This, then, is the aim of him who envies our life, to render men disbelievers in their own salvation, and blasphemous against God the Creator.”

“But, to come now to Moses, why, I wonder, did he merely at the time when Joshua was battling against Amalek, pray sitting with hands expanded, when, in circumstances so critical, he ought rather, surely, to have commended his prayer by knees bended, and hands beating his breast, and a face prostrate on the ground; except it was that there, where the name of the Lord Jesus was the theme of speech-destined as He was to enter the lists one day singly against the devil-the figure of the cross was also necessary, (that figure) through which Jesus was to win the victory? Why, again, did the same Moses, after the prohibition of any "likeness of anything," set forth a brazen serpent, placed on a "tree," in a hanging posture, for a spectacle of healing to Israel, at the time when, after their idolatry, they were suffering extermination by serpents, except that in this case he was exhibiting the Lord's cross on which the "serpent" the devil was "made a show of," and, for every one hurt by such snakes-that is, his angels -on turning intently from the peccancy of sins to the sacraments of Christ's cross, salvation was outwrought? For he who then gazed upon that (cross) was freed from the bite of the serpents.”

“A hard and arduous thing enough, surely, is the continence for God's sake of a holy woman after her husband's decease, when Gentiles, in honour of their own Satan, endure sacerdotal offices which involve both virginity and widowhood! At Rome, for instance, they who have to do with the type of that "inextinguishable fire," keeping watch over the omens of their own (future) penalty, in company with the (old) dragon himself, are appointed on the ground of virginity.”

“The wise tend to understand the "earth" here to refer to those earthly things in which by the strength of that curse the devil is known to inhabit. For it says, "Earth you shall eat all the days of your life." Having been exiled from spiritual realities, he assailed those of the earth who were suitable to his own strengths. This is what it means that he was cast out of heaven and was thrown down to the earth.”

“This is most proper. For heaven has nothing to do with a base, earthly mind, since darkness has nothing in common with the light. If the term the Satan occurs here with the definite article, it does not suggest that he is someone other than the devil … rather he is named with two names. He is called "devil" because he accuses and slanders the virtues and those who love them, and he has even slandered God himself to people, as he did when he suggested to Adam that God was envious. He is called "Satan" because he opposes himself against the Master and his servants. It is therefore to be noted that the downfall of the devil did not only occur after the cross, as though he were inactive in former times. Rather, as he himself confessed to Anthony, the saying of the psalm is fulfilled in him, "The swords of the enemy have come to their end." Therefore, his banishment is the abolition of all his evil enterprises along with his total exclusion from heaven and from his rank. The blessed Justin Martyr noted that after the coming of Christ and after the devil's sentence to Gehenna, the devil especially became a blasphemer, while in former times he did not blaspheme God so brazenly. And so it is accurately said about him, "His heart is hard as stone," since he is unyielding in his evil. And if the expectation of punishment makes him even more evil, how would punishing either him or his followers in Gehenna through fire wash out the filth of sin? And not attaining to this, how would there be a cessation of punishment against those who think vain thoughts?”

“And the great dragon was cast out to the earth. The ancient enemy, expelled from the spiritual realm, is confined more tightly to the earthly realm. This is to be cast out of heaven and sent to the earth. To whom it is said: You shall eat dust all the days of your life (Genesis III). On this earth, he is trampled under the feet of the saints, as it is written: You shall tread upon the asp and the basilisk (Psalm XCI).”

“And that great dragon was cast out, that old serpent, who is called the devil and Satan, who seduceth the whole world; he was cast unto the earth, and his angels were thrown down with him. Our enemy is called a dragon because of his evilness, great because of the hugeness of his wickedness, a serpent because of his snares, old because of the long duration of his deception, and devil because of his fall from heaven and his accusation of the faithful and elect: indeed, devil means both "flowing downwards" and "slanderer;" as for Satan, it means "adversary." In saying who seduceth the whole world, he mentioned the whole to mean a part. So, where was the dragon cast from, and where to, if not from heaven to the earth, that is from the minds of the elect into the hearts of the reprobates? Not that he was not already in them before, but once he has been driven out of the elect, he rules over the reprobates all the more.”

“And he was cast down to the earth, either suffering this visibly, or because having been deprived of his angelic and heavenly rank, he was cast down to an earthly mindset. Then, just as one defending himself, he blames God for his downfall, since it was not possible for him to harm God himself, he harms God's servants, the people, and tries to deceive and turn them away from God, thinking that by doing this he is harming the same Master.”