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Rh chance (may it not happen) they rise too late, and something from the lessons or responses must be shortened: as to which they must take the greatest care lest it occur. But if it happen, he through whose neglect it came about shall give proper satisfaction for it to God in the oratory. ....

16. Holy Divine Service shall be held through the day. As the prophet says: "Seven times in the day do I praise Thee." Which sacred number of seven will thus be fulfilled by us if, at matins, at the first, third, sixth, ninth hours, at vesper time and at "completorium" we perform the duties of our service; for it is of these hours of the day that he said: "Seven times in the day do I praise Thee." For, concerning nocturnal vigils, the same prophet says: "At midnight I arose to confess unto thee." Therefore, at these times, let us give thanks to our Creator concerning the judgments of his righteousness; that is, at matins, etc, and at night we will rise and confess to him. ....

18. In what order the psalms are to be said. The order of the daily psalmody having been arranged, all the rest of the psalms that remain shall be equally divided among the vigils of the seven nights, separating, indeed, the psalms that are the longest among them; and twelve shall be appointed for each night. Laying great stress upon this fact, however, that if this distribution of psalms be not pleasing to any one, he shall arrange it otherwise if he think best; provided he sees to it under all circumstances that every week the entire psalter, to the number of 150 psalms, is said. And on Sunday at Vigils it shall always be begun anew. For those monks show a too scanty proof of their devotion, who, during the course of a week, sing less than the Psalter with its customary canticles: inasmuch as we read that our holy Fathers in one day rigidly fulfilled that, which would that we—lukewarm as we are—might perform in an entire week.

19. Concerning the art of singing. Whereas we believe that there is a divine presence, and that the eyes of the Lord look down everywhere upon the good and the evil: chiefly