CHAPTER XVIII. In what order the Psalms are to be said
21 Feb. 22 June. 22 Oct.
First of all let this verse be said: “O God, come to my assistance; O Lord, make haste to help me,” and the Gloria, followed by the hymn proper to each Hour. At Prime on Sunday four parts of the hundred and eighteenth Psalm are to be said. At the other Hours, that is, Tierce, Sext and None, let three parts of the same Psalm be said. At Prime on Monday let three Psalms be said, namely, the first, second and sixth and so in the same way every day until Sunday let three Psalms be said at Prime in order, up to the nineteenth; the ninth and seventeenth, however, being divided into two Glorias. It will thus come about that at the Night-Office on Sunday we shall always begin with the twentieth Psalm.
Straightaway Saint Benedict treats of the Deus in adiutorium me intende (O God, come to my assistance), the prayer of the monk at every hour and in all circumstances. We do well to read and to re–read frequently