Ambrosiaster : An angry mind will necessarily think evil thoughts, as the devil desires. If the devil finds a mind ready for evil and slipping toward it, he deceives the person who was created for life. The thought, you see, is human. But the devil completes it. — EPISTLE TO THE Ephesians 4.27 Cyprian : In the first place, therefore, dearest brother, both by overseers and people nothing is to be more eagerly sought after, than that we who fear God should keep the divine precepts with every observation of discipline, and should not suffer our brethren to stray, and to live according to their own fancy and lust; but that we should faithfully consult for the life of each one, and not stiffer virgins to dwell with men,-I do not say to sleep together, but to live together -since both their weak sex and their age, still critical, ought to be bridled in all things and ruled by us, lest an occasion should be given to the devil who ensnares us, and desires to rage over us, to hurt them, since the apostle also says, "Do not give place to the devil." The ship is watchfully to be delivered from perilous places, that it may not be broken among the rocks and cliffs; the baggage must swiftly be taken out of the fire, before it is burnt up by the flames reaching it. No one who is near to danger is long safe, nor will the servant of God be able to escape the devil if he has entangled himself in the devil's nets. We must interfere at once with such as these, that they may be separated while yet they can be separated in innocence; because by and by they will not be able to be separated by our interference, after they have become joined together by a very guilty conscience. Moreover, what a number of serious mischiefs we see to have arisen hence; and what a multitude of virgins we behold corrupted by unlawful and dangerous conjunctions of this kind, to our great grief of mind! But if they have faithfully dedicated themselves to Christ, let them persevere in modesty and chastity, without incurring any evil report, and so in courage and steadiness await the reward of virginity. But if they are unwilling or unable to persevere, it is better that they should marry, than that by their crimes they should fall into the fire. Certainly let them not cause a scandal to the brethren or sisters, since it is written, "If meat cause my brother to offend, I will eat no flesh while the world standeth, lest I make my brother to offend." — Epistle LXI Desert Fathers : A hermit said to a brother, 'The devil is like a hostile neighbour and you are like a house. The enemy continually throws all the dirt that he can find into your house. It is your business to throw out whatever he throws in. If you neglect to do this, your house will be so full of mud that you will not be able to get inside. From the moment he begins to throw it in, put it out again, bit by bit: and so with Christ's help your house will remain clean.' — The Desert Fathers, Sayings of the Early Christian Monks Gaius Marius Victorinus : The devil can do nothing to us unless we ourselves willingly allow him to do so. This is true in all our acts. Thus we are masters of our own will; otherwise we would deserve no good return for our good acts and no punishment for our bad acts. The devil's opportunity arises from our own vice. — EPISTLE TO THE Ephesians 2.4.27 John Chrysostom : So then to be at war with one another, is "to give place to the devil"; for, whereas we had need to be all in close array, and to make our stand against him, we have relaxed our enmity against him, and are giving the signal for turning against each other; for never has the devil such place as in our enmities. Numberless are the evils thence produced. And as stones in a building, so long as they are closely fitted together and leave no interstice, will stand firm, while if there is but a single needle's passage through, or a crevice no broader than a hair, this destroys and ruins all; so is it with the devil. So long indeed as we are closely set and compacted together, he cannot introduce one of his wiles; but when he causes us to relax a little, he rushes in like a torrent. In every case he needs only a beginning, and this is the thing which it is difficult to accomplish; but this done, he makes room on all sides for himself. For henceforth he opens the ear to slanders, and they who speak lies are the more trusted: they have enmity which plays the advocate, not truth which judges justly. And as, where friendship is, even those evils which are true appear false, so where there is enmity, even the false appear true. There is a different mind, a different tribunal, which does not hear fairly, but with great bias and partiality. As, in a balance, if lead is cast into the scale, it will drag down the whole; so is it also here, only that the weight of enmity is far heavier than any lead. Wherefore, let us, I beseech you, do all we can to extinguish our enmities before the going down of the sun. For if you fail to master it on the very first day, both on the following, and oftentimes even for a year, you will be protracting it, and the enmity will thenceforward augment itself, and require nothing to aid it. For by causing us to suspect that words spoken in one sense were meant in another, and gestures also, and everything, it infuriates and exasperates us, and makes us more distempered than madmen, not enduring either to utter a name, or to hear it, but saying everything in invective and abuse. How then are we to allay this passion? How shall we extinguish the flame? By reflecting on our own sins, and how much we have to answer for to God; by reflecting that we are wreaking vengeance, not on an enemy, but on ourselves; by reflecting that we are delighting the devil, that we are strengthening our enemy, our real enemy, and that for him we are doing wrong to our own members. Wouldest thou be revengeful and be at enmity? Be at enmity, but be so with the devil, and not with a member of thine own. For this purpose it is that God hath armed us with anger, not that we should thrust the sword against our own bodies, but that we should baptize the whole blade in the devil's breast. There bury the sword up to the hilt; yea, if thou wilt, hilt and all, and never draw it out again, but add yet another and another. And this actually comes to pass when we are merciful to those of our own spiritual family and peaceably disposed one towards another. Perish money, perish glory and reputation; mine own member is dearer to me than they all. Thus let us say to ourselves; let us not do violence to our own nature to gain wealth, to obtain glory. — Homily on Ephesians 14 Origen of Alexandria : He is showing us how an opportunity is being given to the devil by these acts and desires. Once he has entered our body, he takes full possession of us. Or if he cannot take full possession, he at least pollutes the soul, having stuck his flaming darts into us unawares. At times these pierce us with a wound that goes down very deep. At other times we are merely temporarily inflamed. But it is indeed seldom that these burning darts are easily extinguished. They find their place to wound. — ON FIRST PRINCIPLES 3.2.4 Pseudo-Clement : "Do you maintain that there is any prince of evil or not? For if you say that there is not, I can prove to you from many statements, and those too of your teacher, that there is; but if you honestly allow that the evil one exists, then I shall speak in accordance with this belief." And Peter said: "It is impossible for me to deny the assertion of my Teacher. Wherefore I allow that the evil one exists, because my Teacher, who spoke the truth in all things, has frequently asserted that he exists. For instance, then, he acknowledges that he conversed with Him, and tempted Him for forty days. And I know that He has said somewhere else, 'If Satan casts out Satan, he is divided against himself: how then is his kingdom to stand?' And He pointed out that He saw the evil one like lightning falling down from heaven. And elsewhere He said, 'He who sowed the bad seed is the devil.' And again, 'Give no pretext to the evil one.' Moreover, in giving advice, He said, 'Let your yea be yea, and your nay nay; for what is more than these is of the evil one.' Also, in the prayer which He delivered to us, we have it said, 'Deliver us from the evil one.' And in another place, He promised that He would say to those who are impious, 'Go ye into outer darkness, which the Father prepared for the devil and his angels.' And not to prolong this statement further, I know that my Teacher often said that there is an evil one. Wherefore I also agree in thinking that he exists. If, then, in future you have anything to say in accordance with this belief, say it, as you promised." — Clementine Homilies, Homily 19 Shepherd of Hermas : As many, therefore, as are empty, fear the devil, as possessing power. When a man has filled very suitable jars with good wine, and a few among those jars are left empty, then he comes to the jars, and does not look at the full jars, for he knows that they are full; but he looks at the empty, being afraid lest they have become sour. For empty jars quickly become sour, and the goodness of the wine is gone. So also the devil goes to all the servants of God to try them. As many, then, as are full in the faith, resist him strongly, and he withdraws from them, having no way by which he might enter them. He goes, then, to the empty, and finding a way of entrance, into them, he produces in them whatever he wishes, and they become his servants. — Shepherd of Hermas, Commandment 12 Tertullian : We, however (just as we have received), only on the day of the Lord's Resurrection ought to guard not only against kneeling, but every posture and office of solicitude; deferring even our businesses lest we give any place to the devil. Similarly, too, in the period of Pentecost; which period we distinguish by the same solemnity of exultation. — On Prayer Tertullian : For how can the absent be supported by you? By bearing with them? Well, he says that people must be supported, if anywhere they have committed a fault through the weakness of their faith, just as (he enjoins) that we should comfort the faint-hearted; he does not say, however, that they should be sent into exile. But when he urges us not to give place to evil, he does not offer the suggestion that we should take to our heels, he only teaches that passion should be kept under restraint; and if he says that the time must be redeemed, because the days are evil, he wishes us to gain a lengthening of life, not by flight, but by wisdom. — On Flight in Persecution