The Deformation of Piety
“…practical, daily piety (“religious sense”) flows from liturgical piety. The sense of how man approaches God in formal public worship before His throne determines the sense of how man serves God in daily life. It follows from this that changes in practical piety are largely a reflection of changes in liturgical piety. At the same time, as we shall see, misunderstandings of practical piety feed back into liturgical piety. A practical piety that focuses on negation of the world rather than on its transformation will work to destroy the spirit of thanksgiving in the liturgy, and will also give rise to wrong understandings of what is happening during the Lord’s Supper.”
James B. Jordan, Christian Piety: Deformed and Reformed.