4. The first resurrection? Christ's resurrection?
Revelation 20:4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
Revelation 20:5 But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection.
Here we have two groups of the dead "living again". One lives again before the thousand years and one must wait until the thousand years are over. In verse 4 "live" is the Greek word Zao. It is the same word in this verse:
Rev 1:18 I am he that liveth, and was dead; and, behold, I am alive (zao) for evermore, Amen; and have the keys of hell and of death.
Christ used the same exact word for his own physical resurrection. Did Christ not live again physically and in immortality after being dead?
Mat 9:18 While he spake these things unto them, behold, there came a certain ruler, and worshipped him, saying, My daughter is even now dead: but come and lay thy hand upon her, and she shall live (zao) .
Here is the same word. Anytime someone who is dead is said to "live" (zao) it's a reference to physical resurrection.
Amillennialism changes the "first resurrection" from a reference to the first of two groups of the dead being raised back to life in Revelation 20 to somehow being a reference to Christ's own resurrection found in the gospels. It is clearly not speaking of Christ's resurrection for many contextual reasons. It is speaking of the first of two groups of the dead resurrecting.