As we have said, the division in principle between “corporate” and “private” worship must be discarded. The purpose of worship is to constitute the Church, precisely to bring what is “private” into the new life, to transform it into what belongs to the Church, i.e. shared with all of Christ. In addition its purpose is always to express the Church as the unity of the body whose Head is Christ. And, finally its purpose is that we should always “with one mouth and one heart” serve God, since it was only such worship which God commanded the Church to offer.

–Alexander Schemmman, Introduction to Liturgical Theology, p. 24