It is truly fitting and just, right and profitable for our salvation, always and everywhere to give thanks to you, Lord, holy Father, almighty, eternal God. With your only-begotten Son and the Holy Spirit, you are one God, one Lord, not in the singleness of one Person, but in a Trinity of one substance. For, whatever we believe through your revelation about your glory, the same also we believe about your Son and about the Holy Spirit, without distinction or difference. So that in acknowledging the true and eternal Godhead, we adore each individual person and, at the same time, their one substance and their equal majesty: which the Angels, the Archangels, the Cherubim and the Seraphim all praise, never ceasing to cry out with one voice:
Holy, holy, holy is the Lord God of mighty hosts! The heavens and earth are full of your glory. Hosanna in the highest. Bless'd is he who comes in the Lord's name. Hosanna in the highest.
This is the translation of the Preface of the Most Holy Trinity prepared by the Saint Bede Studio for the Order of Mass published by Ignatius Press.
The translation and illustration may not be reproduced without prior approval.