Alcuin of York — on Rev 20:6 (QUESTIONS AND ANSWERS MANUAL ON REVELATION)

“QUESTION: Blessed and holy is he that hath part in the first resurrection. ANSWER: That is, he who keeps what he has gained in his second birth. THERE FOLLOWS: But they shall be saints of God and of Christ. ANSWER: Another edition has "priests of God and of Christ." This does not refer only to bishops and church ministers, who are the ones properly called priests in the Church, but, just as we are all called "christs" because of the mystical unction, so are we all called priests because we are the limbs of one priest; whence Peter says, a holy nation, a kingly priesthood. [1 Pet. 2:9] QUESTION: And shall reign with Christ a thousand years. ANSWER: When John was writing this, the Spirit announced that the Church would reign for a thousand years, that is until the end of the world. (20:7) THERE FOLLOWS: And when the thousand years shall be finished, Satan shall be loosed out of his prison. ANSWER: Saying finished, he meant a part by the whole, for Satan shall be loosed when there are still left the three years and six months of the last battle; but apart from this trope, it is right to say that the time will be finished. (What he earlier defined as three years and a half, he here called three years and six months.)”