Paragraph 33. The structure of the liturgy of the hours follows laws of its own and incorporates in its own way elements found in other Christian celebrations. Thus it is so constructed that, after a hymn, there is always psalmody, then a long or short reading of sacred Scripture, and finally prayer of petition.

In a celebration in common and in private recitation the essential structure of this liturgy remains the same, that is, it is a conversation between God and his people. Celebration in common, however, expresses more clearly the ecclesial nature of the liturgy of the hours; it makes for active participation by all, in a way suited to each one's condition, through the acclamations, dialogue, alternating psalmody, and similar elements. It also better provides for the different literary genres that make up the liturgy of the hours. Hence, whenever it is possible to have a celebration in common, with the people present and actively taking part, this kind of celebration is to be preferred to one that is individual and, as it were, private. It is also advantageous to sing the office in choir and in community as opportunity Offers, in accordance with the nature and function of the individual parts.

In this way the Apostle's exhortation is obeyed: "Let the word of Christ dwell in you in all its fullness, as you teach and counsel each other in all wisdom by psalms, hymns, and spiritual canticles, singing thankfully to God in your hearts" (Col 3:16; see Eph 5:19-20).