12:1 - And there appeared a great wonder in heaven; a woman clothed with the sun, and the moon under her feet, and upon her head a crown of twelve stars:

Hippolytus Dogmatical and Historical Fragments
And the dragon was wroth with the woman, and went to make war with the saints of her seed, which keep the commandments of God, and have the testimony of Jesus."[142]
Methodius Discourse VIII. Thekla
John, in the course of the Apocalypse, says:[12]

12:3 - And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.

Shepherd of Hermas Vision Fourth
proceeded. But the size of that beast was about a hundred feet, and it had a head like an urn.[7]

12:7 - And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,

Shepherd of Hermas Similitude Eighth
And the great and glorious angel Michael is he who has authority over this people, and governs them;[13]
The First Epistle of Clement Concerning Virginity
If so be, then, that thou longest for all these things, conquer the body; conquer the appetites of the flesh; conquer the world in the Spirit of God; conquer these vain things of time, which pass away and grow old, and decay, and come to an end; conquer the dragon;[38]

12:9 - And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceives the whole world: he was cast out into the earth, and his angels were cast out with him.

Irenaeus Against Heresies Book I
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.[307]
Irenaeus Against Heresies Book IV
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[6]
Tertullian An Answer to the Jews
and, for every one hurt by such snakes-that is, his angels[217]
Tertullian To His Wife Book I
keeping watch over the omens of their own (future) penalty, in company with the (old) dragon[69]
Didache
and then shall appear the world-deceiver[143]

12:10 - And I heard a loud voice saying in heaven, Now has come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.

Tertullian A Treatise on the Soul
Now the friendly understanding you will have to carry out must arise from your observance of the compact: you must never think of getting back any of the things which you have abjured, and have restored to him, lest he should summon you as a fraudulent man, and a transgressor of your agreement, before God the Judge (for in this light do we read of him, in another passage, as "the accuser of the brethren,"[246]

12:14 - And to the woman were given two wings of a great eagle, that she might fly into the wilderness, into her place, where she is nourished for a time, and times, and half a time, from the face of the serpent.

Irenaeus Against Heresies Book II
But they are altogether full of deceit of every kind, apostate inspiration, demoniacal working, and the phantasms of idolatry, and are in reality the predecessors of that dragon[279]

12:15 - And the serpent cast out of his mouth water as a flood after the woman, that he might cause her to be carried away of the flood.

A Treatise Against the Heretic Novatian by an Anonymous Bishop
, by the "violence of the flood which the serpent sent forth from his mouth after the woman."[50]