Revelation 20:3

The devil was cast into the "abyss," taken in the sense of the countless number of godless people whose bitter hatred of God's church comes from the abysmal depths of their hearts. The devil was cast into those hearts, not in the sense that he was not there before, but because in proportion as he has been more and more shut out from believing hearts, he has taken still deeper hold upon unbelievers. It is bad enough to be a stranger to God, but gratuitously to hate God's servants is to have the devil's hold take even deeper root.… The words "closed it over him" mean that the angel rendered him powerless to escape, that is, forbade him to go beyond bounds. The further verb, "sealed," means, I think, that the angel wants no one to know the secret of who is on the devil's side and who is not. For to be sure, this secret division is absolutely unknowable in this world of time, inasmuch as we have no certainty whether the one who is now upright is going to fall, and the one who is now lying flat is going to rise to righteousness. The nations or people freed from the devil's seductions, in virtue of this restraining and disabling chaining and imprisonment, are those whom he used to lead astray and hold captive but who now belong to Christ. For God chose, before the world was made, to rescue these from the power of darkness and to transfer them into the kingdom of his beloved Son, as Paul says. With respect to others not predestined to eternal life, the devil continues to this very day to lead these people astray and to drag them down into eternal damnation, as every believer knows. And these assertions are not shaken by the fact that the devil often seduces those people, too, who have been reborn in Christ and walk in the ways of God. For "the Lord knows who are his." Of these chosen ones the devil seduces no one to the point of eternal damnation. […]

When he is let loose at last, there will be little time left, since, as we read, he and his [followers] will rage with the fullness of strength only for three years and six months. Moreover, the people upon whom he will make war are to be such people as will be beyond overpowering by his open attacks or hidden ambush. If he were never set free, the full measure of his malevolent power would never be known, nor would the full measure of the holy city's staunchness under fire be put to the test. Likewise, we would not have a full view of the good use to which almighty God puts the devil's great wickedness. For example, [we would not see] how God allows him, even though driven from the saints' inmost hearts which cling to God in faith, to tempt the saints somewhat so that they may profit by these external assaults. We would not see how God, further, has bound him in those who belong to his camp, to make it impossible for him to spill out and set to work such quantities of his evil power as would topple down countless weak souls destined to increase and fill the church. These include already believing people whose constancy the devil would smash, and people destined to believe whom he would frighten from the faith. At last, God will loose him to the end that all people may see how mighty a foe God's city had overcome—all to the immense glory of its Liberator, Helper, Redeemer.… However, it may be asked whether, during the last three years and a half in which the unleashed devil will stage his all-out offensive, any one of these haters [of Christians] is to turn at last to the faith he formerly spurned? Think of the text: "How can anyone enter the strong man's house and plunder his goods, unless he first binds the strong man?" How can these words remain true if the devil can be dispossessed just as well when he is loosed? […]

On this Caius the heretic objected : that Satan is bound here, according to that which is written, that Christ went up into the strong man's house and bound him, and spoiled his goods for us [St. Matth. xii. 29]. Hippolytus answered this and said : If the Devil has been bound, how does he deceive the faithful and persecute and plunder men ? And if you say that he has been bound as regards the faithful, how did he draw near against Christ, Him who aid no sin? according to the text, The Prince cometh and findeth no sin in me [St. John, xiv. 30 4]. And if then he has been bound, how did the Lord teach us to pray, that we should be delivered front the evil one [St. Matth. vi. 13] ? and why did he desire to tempt Simon and the Apostles [St. Luke, xxii. 31]? And how was one who had been bound able to sift and trouble the disciples [ib.]? And truly for us the conflict is not against flesh and blood, but against principalities, and against the rulers of the darkness of this world [Eph. vi. 12]. If he had been bound, he would not maintain the conflict, or catch away the word which was sown [St. Matth. xiii. 19], as is said in the Parable of the Seed. That He has bound the strong man; the meaning of it is this : that He has rebuked and cast scorn on those who did not come unto Him when He went against the Devil in order to purify them from his bondage and make them sons unto the Father. And this is proved by what He said just after, that he that is not with me is against me, and he that gathereth not with me, scattereth abroad [St. Matth. xii. 30]. Accordingly, in the end of times, the Devil is to be bound and to be flung into the bottomless pit, when the Lord comes ; even as Esaias hath said, that the wicked shall be taken away in order that he see not the glory of the Lord [Isai. xxvi. 10----LXX. (Syr. Hex.)]. […]

set a seal upon him. That is, placed upon it the bolt of the cross so that he might never regain his strength, nor any more seduce the nations, whom the resurrection will restore and make better.

"And sealed it over him," that is, placed upon it the bolt of the cross so that he might never regain his strength, nor any more seduce the nations, whom the resurrection will restore and make better. Nonetheless, to this explanation the following seems in …