Directory on popular piety and the liturgy. Principles and 13.5.2002 · No other action of the Church can equal its efficacy by the same title and to the same degree"(45). 55. Any unilateral exaltation of popular piety which fails to take account of the Liturgy, is inconsistent with the fact that the essential elements of the Liturgy derive from the will of Christ himself, and is unable to emphasize its indispensable sotereological and doxological importance.