Revelation 14:1
"Then I saw, and look! the Lamb standing on Mount Zion, and with him 144,000..."
Then, after identifying the 144,000 it says in verse 4....
"These are the ones who keep following the Lamb no matter where he goes. These were bought from among mankind as firstfruits to God and to the Lamb".
The 144,000 are bought from the earth as "firstfruits".....the "first" to be resurrected. Revelation 20:6 says that they will rule with Christ for the 1,000 years.
They are not the only ones. All of Christ's disciples from the first century down to the time of the end have been "sleeping". Many of them, but not all were martyred. All of these will rise together in this one time period, as Paul said.
What??? The dragon is the original serpent, satan the devil who has been confined in an abyss with his hordes...locked away for the 1,000 years of Christ's rule. How does he come to life when he was never dead?
The general resurrection of the dead takes place once the earth is cleansed of all wickedness and those who practice it. At John 5:28-29, Jesus says...
"Do not be amazed at this, for the hour is coming in which all those in the memorial tombs will hear his voice 29 and come out, those who did good things to a resurrection of life, and those who practiced vile things to a resurrection of judgment."
Jesus calls the dead from their graves to life on earth...just as he did Lazarus. (John 11:11-14)
That is a bit muddled up.
Once satan has been released from his prison to test mankind one last time, there is no need for the ones misled by him to cause ruin again....it says in Revelation 20:7-9...
"Now as soon as the 1,000 years have ended, Satan will be released from his prison, 8 and he will go out to mislead those nations in the four corners of the earth, Gog and Maʹgog, to gather them together for the war. The number of these is as the sand of the sea. 9 And they advanced over the whole earth and encircled the camp of the holy ones and the beloved city. But fire came down out of heaven and consumed them."
This is a war where God's enemies are gathered, but it never gets fought. No righteous ones are harmed....fire from heaven consumes these enemies before they even fire a shot.
There is only one end prepared for the devil and his angels and that is "the lake of fire", which is "the second death".
This is a death from which no one returns...it is a symbol of everlasting destruction, like gehenna.
Matthew 25:31-34...
"When the Son of man comes in his glory, and all the angels with him, then he will sit down on his glorious throne. 32 All the nations will be gathered before him, and he will separate people one from another, just as a shepherd separates the sheep from the goats. 33 And he will put the sheep on his right hand, but the goats on his left.
34 “Then the King will say to those on his right: ‘Come, you who have been blessed by my Father, inherit the Kingdom prepared for you from the founding of the world."
But to the goats he says...V41, 46....
"Then he will say to those on his left: ‘Go away from me, you who have been cursed, into the everlasting fire prepared for the Devil and his angels....These will depart into everlasting cutting-off, but the righteous ones into everlasting life."
The devil has always known his fate...but he finds pleasure in taking as many down into oblivion with him as he can.