Alcuin of York — on Rev 1:6 (COMMENTARY ON REVELATION)

“And hath made our kingdom priests to God and his Father. Because our Head is a king and priest, all the limbs are kings and priests, as the apostle Peter says in You are a chosen generation, a kingly priesthood. [1 Pet. 2:9] They are kings by governing themselves, and priests by offering themselves to God, according to this: I beseech you therefore by the mercy of God, that you present your bodies a living sacrifice. [Rom. 12:1] So, in saying to God and his Father, he indicates one person (although, according to the rule mentioned earlier, the Holy Spirit is there understood) in the same way as the apostle also says, Blessed be the God and Father of our Lord Jesus Christ, [2 Cor. 1:3] with the intention that one person should be understood by God and Father; hence it needs to be said, to him be glory forever and ever: to him, that is to him who has made us kings and priests, namely the Father and the Son, in which we understand the love of both, which is the Holy Spirit: for the love of God is poured forth in our hearts by the Holy Ghost. [Rom. 5:5] Moreover, the Church is right to attribute glory for these things not to itself, but to the one it received them from, according to this: Not to us, O Lord, not to us; but to thy name give glory. [Ps. 113:9]”