Apostolic Constitutions, Book VIII 5

1O You the great Being, O Lord God Almighty, who alone art unbegotten, and ruled over by none; who always is, and was before the world; who stands in need of nothing, and art above all cause and beginning; who only art true, who only art wise; who alone art the most high; who art by nature invisible; whose knowledge is without beginning; who only art good, and beyond compare; who know all things before they are; who art acquainted with the most secret things; who art inaccessible, and without a superior; the God and Father of Your only begotten Son, of our God and Saviour; the Creator of the whole world by Him; whose providence provides for and takes the care of all; the Father of mercies, and God of all consolation; who dwellest in the highest heavens, and yet lookest down on things below: You who appointed the rules of the Church, by the coming of Your Christ in the flesh; of which the Holy Ghost is the witness, by Your apostles, and by us the bishops, who by Your grace are here present; who hast fore-ordained priests from the beginning for the government of Your people — Abel in the first place, Seth and Enos, and Enoch and Noah, and Melchisedec and Job; who appointed Abraham, and the rest of the patriarchs, with Your faithful servants Moses and Aaron, and Eleazar and Phineas; who chose from among them rulers and priests in the tabernacle of Your testimony; who chose Samuel for a priest and a prophet; who did not leave Your sanctuary without ministers; who delighted in those whom You chose to be glorified in. Pour down, by us, the influence of Your free Spirit, through the mediation of Your Christ, which is committed to Your beloved Son Jesus Christ; which He bestowed according to Your will on the holy apostles of You the eternal God. Grant by Your name, O God, who search the hearts, that this Your servant, whom You have chosen to be a bishop, may feed Your holy flock, and discharge the office of an high priest to You, and minister to You, unblameably night and day; that he may appease You, and gather together the number of those that shall be saved, and may offer to You the gifts of Your holy Church. Grant to him, O Lord Almighty, through Your Christ, the fellowship of the Holy Spirit, that so he may have power to remit sins according to Your command; to give forth lots according to Your command; to loose every bond, according to the power which You gave the apostles; that he may please You in meekness and a pure heart, with a steadfast, unblameable, and unreprovable mind; to offer to You a pure and unbloody sacrifice, which by Your Christ You have appointed as the mystery of the new covenant, for a sweet savour, through Your holy child Jesus Christ, our God and Saviour, through whom glory, honour, and worship be to You in the Holy Spirit, now and always, and for all ages. And when he has prayed for these things, let the rest of the priests add, Amen; and together with them all the people. And after the prayer let one of the bishops elevate the sacrifice upon the hands of him that is ordained, and early in the morning let him be placed in his throne, in a place set apart for him among the rest of the bishops, they all giving him the kiss in the Lord. And after the reading of the Law and the Prophets, and our Epistles, and Acts, and the Gospels, let him that is ordained salute they Church, saying, The grace of our Lord Jesus Christ , the love of God and the Father, and the fellowship of the Holy Ghost, be with you all; and let them all answer, And with Your Spirit. And after these words let him speak to the people the words of exhortation; and when he has ended his word of doctrine (I Andrew the brother of Peter speak), all standing up, let the deacon ascend upon some high seat, and proclaim, Let none of the hearers, let none of the unbelievers stay; and silence being made, let him say:—
2God and Father of our Lord Jesus Christ, the Father of mercies and the God of all consolation, who know all things before they take place; You who appointed the rules of the Church through the word of Your grace; who appointed beforehand the race righteous from the beginning that came from Abraham to be rulers, and constituted them priests, not leaving Your sanctuary without ministers; who from the foundation of the world delighted in those whom You chose to be glorified in; and now pour down the influence of Your free Spirit, which through Your beloved Son Jesus Christ You have bestowed on Your holy apostles, who set up the Church in the place of the sanctuary, to unending glory and praise of Your name: O You, who knows the hearts of all, grant that this Your servant whom You have chosen to the holy office of Your bishop, may discharge the duty of a high priest to You, and minister to You unblameably night and day; that he may appease You unceasingly, and present to You the gifts of Your holy Church, and in the spirit of the high-priesthood have power to remit sins according to Your commandment, to give lots according to Your injunction, to loose every bond according to the power which You have given to the apostles, and be well-pleasing to You, in meekness and a pure heart offering a smell of sweet savour through Your Son Jesus Christ our Lord, with whom to You be glory, power, and honour, along with the Holy Spirit, now and forever. Amen.