Revelation 5:10

And thou shalt receive the kingdom of heaven, thou who, whilst thou didst sojourn in this life, didst know the Celestial King. And thou shalt be a companion of the Deity, and a co-heir with Christ, no longer enslaved by lusts or passions, and never again wasted by disease. For thou hast become God: for whatever sufferings thou didst undergo while being a man, these He gave to thee, because thou wast of mortal mould, but whatever it is consistent with God to impart, these God has promised to bestow upon thee, because thou hast been deified, and begotten unto immortality. This constitutes the import of the proverb, "Know thyself; "i.e., discover God within thyself, for He has formed thee after His own image. For with the knowledge of self is conjoined the being an object of God's knowledge, for thou art called by the Deity Himself.

And He made them kings and priests to our God, and they shall reign on the earth. Therefore, you are able also to understand the Scripture, for you are faithful servants of Christ, both kings and leaders of the churches; you are able to govern the passions rather than be governed by them; and as priests, you bring your own bodies "as a living, holy, and acceptable sacrifice to God," according to what is written. (Rom. 12:1)

Christ wrote a new song by the harmonious truth of both Testaments. This he did when he, remaining the Word which was in the beginning, was born by a new sort of birth through the Virgin. This he did when he as God put on man in a new manner. This he did when he gave himself over to his killers by his own power. This he did when he was wondrously made alive from the dead and when at a time of his own choosing was ascended beyond the heavens. And this new song he bestowed upon all those who belong to the church which he acquired, that it might be sung continually, and that in this [the church] might rest secure as it awaits in hope the coming judge, that "we might walk in the newness of life." As he said, "If any one wishes to be my disciple, let him deny himself and take up his cross and follow me."

Through this passage it is revealed that the elders, both those in the Old Testament and those in the New Testament, were well-pleasing to God, and that on behalf of the whole world they bring forth a [hymn of] thanksgiving to the Lamb of God who was slain and redeemed us. It is a "new song," which we have been taught to sing, who from every tribe and tongue have been freed from the antiquity of the letter and through the Spirit have received light. He says that these will rule the new earth, which the Lord promised to the humble.

And hast made us to our God a kingdom and priests, and we shall reign on the earth. The elect are kings, when, by restraining their bodies, it is as if they were reigning over a subjected earth with the law of virtue, which is why they affirm they have received a kingdom on earth too. They are priests because they offer themselves to God by chastising themselves every day, according to this: A sacrifice to God is an afflicted spirit. [Ps. 50:19]