“They do indeed injure, but those only by whom they are feared, whom the powerful and lofty hand of God does not protect, who are uninitiated in the mystery of truth. But they fear the righteous, that is, the worshippers of God,”Lactantius
The Divine Institutes Bk. II Ch. XVI, Vol. 7

“They cannot speak falsely to God, by whom they are adjured, nor to the righteous, by whose voice they are tortured. Therefore, ofttimes having uttered the greatest howling’s, they cry out that they are beaten, and are on fire, and that they are just on the point of coming forth: so much power has the knowledge of God, and righteousness!”Lactantius
The Divine Institutes Bk. II Ch. XVI, Vol. 7

"And thou (Satan) were ignorant that it was a virgin that should bring forth; but the angels’ song of praise struck thee with astonishment, as well as the adoration of the Magi, and the appearance of the star. Thou did revert to thy state of [willful] ignorance, because all the circumstances seemed to thee trifling; for thou did deem the swaddling-bands, the circumcision, and the nourishment by means of milk contemptible: these things appeared to thee unworthy of God."Ignatius (Disciple of Apostle John)
Spurious Epistle Pt. 2 Ch. IX, Vol. 1

"He wrought in Judas, in the Pharisees, in the Sadducees, in the old, in the young, and in the priests. But when it was just about to be erected, he was troubled, and infused repentance into the traitor, and pointed him to a rope to hang himself with, and taught him [to die by] strangulation. He terrified also the silly woman, disturbing her by dreams; and he, who had tried every means to have the cross prepared, now endeavored to put a stop to its erection; not that he was influenced by repentance on account of the greatness of his crime (for in that case he would not be utterly depraved), but because he perceived his own destruction [to be at hand]."Ignatius (Disciple of Apostle John)
Spurious Epistle Pt. 2 Ch. IV, Vol. 1

"And these things were said both among the Greeks and among all nations where they [the demons] heard the prophets foretelling that Christ would specially be believed in; but that in hearing what was said by the prophets they did not accurately understand it, but imitated what was said of our Christ, like men who are in error, we will make plain."Justin Martyr
First Apology Ch. LIV, Vol. 1

For of articles of food, those are the most suitable which are fit for immediate use without fire, since they are readiest; and second to these are those which are simplest, as we said before. But those who bend around inflammatory tables, nourishing their own diseases, are ruled by a most lickerish demon, whom I shall not blush to call the Belly-demon, and the worst and most abandoned of demons. He is therefore exactly like the one who is called the Ventriloquist-demon. It is far better to be happy than to have a demon dwelling with us. And happiness is found in the practice of virtue.Clement
Instructor Bk 1, Ch. I, Vol. 2

"Whom, therefore, can they injure, except those whom they have in their own power? In short, Hermas affirms that those who have known God are not only safe from the attacks of demons, but that they are not even bound by fate. “The only protection,” he says, “is piety, for over a pious man neither evil demon nor fate has any power: for God rescues the pious man from all evil; for the one and only good thing among men is piety.” And what piety is, he testifies in another place, in these words: “For piety is the knowledge of God.”Lactantius
The Divine Institutes Bk. II Ch. XVI, Vol. 7

"But when the Lord appeared, and the devil clearly understood that eternal fire was laid up and prepared for him and his angels, he then began to plot without ceasing against the faithful, being desirous to have many companions in his apostasy, that he might not by himself endure the shame of condemnation, comforting himself by this cold and malicious consolation."Justin Martyr
Other Fragments Ch. IV, Vol. 1

"But those who hand down the myths which the poets have made, adduce no proof to the youths who learn them; and we proceed to demonstrate that they have been uttered by the influence of the wicked demons, to deceive and lead astray the human race."Justin Martyr
First Apology Ch. LVI, Vol. 1

"Thou, O Belial, dragon, apostate, crooked serpent, rebel against God, outcast from Christ, alien from the Holy Spirit, exile from the ranks of the angels, reviler of the laws of God, enemy of all that is lawful, who did rise up against the first-formed of men, and didst drive forth [from obedience to] the commandment [of God] those who had in no respect injured thee; thou who didst raise up against Abel the murderous Cain; thou who didst take arms against Job."Ignatius (Disciple of Apostle John)
Spurious Epistle Pt. 2 Ch. XI, Vol. 1

"But after His [lengthened] fast thou didst again assume thy wonted audacity, and didst tempt Him when hungry, as if He had been an ordinary man, not knowing who He was. For thou said, “If thou be the Son of God, command that these stones be made bread.” (Mat_4:3) Now, this expression, “If thou be the Son,” is an indication of ignorance. For if thou had possessed real knowledge, thou wouldst have understood that the Creator can with equal ease both create what does not exist, and change that which already has a being."Ignatius (Disciple of Apostle John)
Spurious Epistle Pt. 2 Ch. IX, Vol. 1

Believe not the enemy who is to come and be seen; for he is an adversary and corrupter and son of perdition, and deceives you; and for this reason he will kill you, and smite them with the sword. Behold the deceit of the enemy, know the machinations of the beguiler, how he seeks to darken the mind of men utterly. For he will show forth his demons brilliant like angels, and he will bring in hosts of the incorporeal without number. And in the presence of all he exhibits himself as taken up into heaven with trumpets and sounds, and the mighty shouting of those who hail him with indescribable hymns; the heir of darkness himself shining like light, and at one time soaring to the heavens, and at another descending to the earth with great glory, and again charging the demons, like angels, to execute his behests with much fear and trembling.Hippolytus
Appendix Vol. 5