{18} And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.

(18) The third part, eternal destruction against those that are overcome: as I noted in the same place.

People's New Testament

20:10 And the devil that deceived them was cast into the lake of fire. This is Satan's last battle. His time has come. The great deceiver is not cast into the bottomless pit now. The lake of fire is opened, and we discover there the beast and the false prophet, but they have gone whence none ever return. There the devil is cast in and locked up to abide with his allies in wickedness forever.

Wesley's Notes

20:10 And they - All these. Shall be tormented day and night - That is, without any intermission. Strictly speaking, there is only night there: no day, no sun, no hope!

Scofield Reference Notes

[2] devil

Satan, Summary: This fearful being, apparently created one of the cherubim See Scofield Note: "Ezek 1:5" See Scofield Note: "Ezek 28:12" and anointed for a position of great authority, perhaps over the primitive creation, (note 3); See Scofield Note: "Gen 1:2" Ezek 28:11-15 fell through pride Isa 14:12-14 His "I will" Isa 14:13 marks the introduction of sin into the universe. Cast out of heaven Lk 10:18 he makes earth and air the scene of his tireless activity Eph 2:2 1Pet 5:8. After the creation of man he entered into the serpent. See Scofield Note: "Gen 3:1", and, beguiling Eve by his subtilty, secured the downfall of Adam and through him of the race, and the entrance of sin into the world of men Rom 5:12-14.

The Adamic Covenant See Scofield Note: "Gen 3:14" promised the ultimate destruction of Satan through the "Seed of the woman." Then began his long warfare against the work of God in behalf of humanity, which still continues. The present world-system Rev 13:8 organized upon the principle of force, greed, selfishness, ambition, and sinful pleasure, is his work and was the bribe which he offered to Christ Mt 4:8,9. Of that world-system he is prince Jn 14:30 16:11 and god 2Cor 4:4. As "prince of the power of the air" Eph 2:2 he is at the head of vast host of demons. See Scofield Note: "Mt 7:22". To him, under God, was committed upon earth the power of death Heb 2:14. Cast out of heaven as his proper sphere and "first estate," he still has access to God as the "accuser of the brethren" Rev 12:10 and is permitted a certain power of sifting or testing the self-confident and carnal among believers Job 1:6-11 Lk 22:31,32 1Cor 5:5 1Tim 1:20 but this is strictly permissive and limited power, and believers Song sifted are kept in faith through the advocacy of Christ Lk 22:31,32. See Scofield Note: "1Jn 2:1". At the beginning of the great tribulation Satan's privilege of access to God as accuser will be withdrawn Rev 12:7-12. At the return of Christ in glory Satan will be bound for one thousand years Rev 20:2 after which he will be "loosed for a little season" Rev 20:3,7,8 and will become the head of final effort to overthrow the kingdom. Defeated in this, he will be finally cast into the lake of fire, his final doom. The notion that he reigns in hell is Miltonic, not biblical. He is prince of this present world-system, but will be tormented in the lake of fire.

Jamieson-Fausset-Brown Bible Commentary

10. that deceived-Greek, "that deceiveth."

lake of fire-his final doom: as "the bottomless pit" (Re 20:1) was his temporary prison.

where-so Coptic. But A, B, Vulgate, and Syriac read, "where also."

the beast and the false prophet are-(Re 19:20).

day and night-figurative for without intermission (Re 22:5), such as now is caused by night interposing between day and day. The same phrase is used of the external state of the blessed (Re 4:8). As the bliss of these is eternal, so the woe of Satan and the lost must be. As the beast and the false prophet led the former conspiracy against Christ and His people, so Satan in person heads the last conspiracy. Satan shall not be permitted to enter this Paradise regained, to show the perfect security of believers, unlike the first Adam whom Satan succeeded in robbing of Paradise; and shall, like Pharaoh at the Rod Sea, receive in this last attempt his final doom.

for ever and ever-Greek, "to the ages of the ages."

Matthew Henry's Concise Commentary

20:7-10 While this world lasts, Satan's power in it will not be wholly destroyed, though it may be limited and lessened. No sooner is Satan let loose, than he again begins deceiving the nations, and stirring them up to make war with the saints and servants of God. It would be well if the servants and ministers of Christ were as active and persevering in doing good, as his enemies in doing mischief. God will fight this last and decisive battle for his people, that the victory may be complete, and the glory be to himself.