Revelation 20:7

“And when the thousand years are expired, etc.] Which are not yet expired; not in the year 1000, or 1033 or 4, reckoning from the birth or death of Christ, when Paganism, which had been destroyed in the Gentile world, was introduced into the church, which bore the Christian name, through the man of sin; for this had been bringing in by degrees more or less from the times of Constantine; whence it appears, that Satan in this respect was loose before, and therefore this was not the time of his loosing; nor in 1073, reckoning from the destruction of Jerusalem, and the carrying and spread of the Gospel among the Gentiles, in which year Hildebrand came to the popedom, who may be truly called the…”

“expired--Greek, "finished."”

“And when the thousand years are expired - See Revelation 20:2. Satan shall be loosed out of his prison - See Revelation 20:3. That is, a state of things will then occur as if Satan should be for a time let loose again, and should be permitted to go as formerly over the world. No intimation is given “why or how” he would be thus released from his prison. We are not, however, to infer that it would be a mere arbitrary act on the part of God. All that is necessary to be supposed is, that there would be, in certain parts of the world, a temporary outbreak of wickedness, as if Satan were for a time released from his chains. return to 'Top of Page'”

“And when the former thousand years are fulfilled, Satan shall be loosed out of his prison - At the same time that the first resurrection begins. There is a great resemblance between this passage and Rev 12:12. At the casting out of the dragon, there was joy in heaven, but there was woe upon earth: so at the loosing of Satan, the saints begin to reign with Christ; but the nations on earth are deceived. Revelation 20:8”

“20:7-10 Satan’s all-out attempt to conquer God’s people is followed by his fiery demise. This passage has two major purposes: (1) to show God’s absolute justice, because Satan and his followers are worthy of punishment and will never change; and (2) to show the depravity of people who follow Satan. In spite of viewing the nature of Christ’s reign in the world for many years, they still flock to Satan’s standard when he is freed. These factors are the basis for the judgment at the great white throne (20:11-15). 20:7-8 When free to act (20:7), Satan still seeks to deceive. He will gather a mighty army (cp. Ezek 38–39) in a final attempt to overwhelm God’s people (Rev 20:9).”

“Rev 20:2 Revelation 20:8”