Certum tenentes ordinem

Certum tenentes ordinem,
pio poscamus pectore
hora diei tertia
trinae virtutis gloriam,
Now holding fast to God's design,
As daylight reaches its third hour,
With pious hearts let us implore
The glory of his threefold pow'r.
Ut simus habitaculum
illi Sancto Spiritui,
qui quondam in apostolis
hac hora distributus est.
Let us become a dwelling place
For that same Holy Spirit blest,
Who over the apostles' heads
This very hour once came to rest.
Hoc gradiente ordine,
ornavit cuncta splendide
regni caelestis conditor
ad nostra aeterna praemia.
Although this order marches on,
Yet God the maker has ordained
That through the passing things of earth
Rewards eternal should be gained.
Deo Patri sit gloria
eiusque soli Filio
cum Spiritu Paraclito,
in sempiterna saecula.
To God the Father glory be
And glory to his only Son
And to the Spirit Paraclete
Forevermore while ages run.

This translation appears in the Hymnal for the Hours, by Rev. Samuel Weber, O.S.B.