25. Since, therefore, the person concerned is one fit to write on the Duties, let us see whether the subject itself stands on the same ground, and whether this word is suitable only to the schools of the philosophers, or is also to be found in the sacred Scriptures. Beautifully has the Holy Spirit, as it happens, brought before us a passage in reading the Gospel to-day, as though He would urge us to write; whereby we are confirmed in our view, that the word officium, “duty,” may also be used with us. For when Zacharias the priest was struck dumb in the temple, and could not speak, it is said: “And it came to pass that as soon as the days of his duty [officii] were accomplished, he departed to his own house.” Luke i. 23. The Vulgate has officii; the Greek text reads: τῆς λειτουργίας. We read, therefore, that the word officium, “duty,” can be used by us.