On Trinity Sunday, and other Sundays lacking a proper or seasonal preface.
[P] World without end.
It is truly meet and just, right and availing unto salvation, that we should in all times and in all places give thanks unto Thee, O holy Lord, Father almighty and everlasting God; who with Thine only begotten Son and the Holy Ghost art one God, one Lord: not in the unity of a single person, but in the Trinity of a single nature. For that which we believe on Thy revelation concerning Thy glory, that same we believe of Thy Son, that same of the Holy Ghost, without difference or discrimination. So that in confessing the true and everlasting Godhead, we shall adore distinction in persons, oneness in being, and equality in majesty. This the angels and archangels, the cherubim too, and the seraphim do praise; day by day they cease not to cry out, saying as with one voice:
[All] Holy, Holy, Holy, Lord God of hosts.