Apostolic Constitutions, Book VII 47
1Glory be to God in the highest, and upon earth peace, good-will among men. We praise You, we sing hymns to You, we bless You; we glorify You, we worship You by Your great High Priest; You who art the true God, who art the One Unbegotten, the only inaccessible Being. For Your great glory, O Lord and heavenly King, O God the Father Almighty, O Lord God, takest away the sins of the world, receive our prayer. Thou who sittest at the right hand of the Father, have mercy upon us, for Thou only art holy; Thou only art Christ, Jesus Christ, to the glory of God the Father. Amen."}}--> the Father of Christ the immaculate Lamb, who takes away the sin of the world, receive our prayer, You that sits upon the cherubim. For You alone are holy, You alone are the Lord Jesus, the Christ of the God of all created nature, and our King, by whom glory, honour, and worship be to You.