I.2
And as the sun, the moon, and all the the stars ennoble the day and night, so the merits of the holy priests strengthen the teachings of the Church.
In an appendix at the end of Book 1 of the Life:
Verses to be sung at table on Columbanus's feast day
Priest, sustained by bountiful grace, you are praised brightly
By your own, you, Columba, who waft glory over all the earth.
(trans. Wood and O'Hara 2017, 98, 170)