One of the early church fathers said: Lex Orandi Lex Credendi: 'the law of prayer is the law of belief'. The liturgy will shape you in potent ways. A 5-year-old kid will not remember what I preached on 4 Sundays ago, but he will remember that we raise our hands in the Gloria Patri and we sing this psalm when the offering is brought forward. The kids know the liturgy. And what this kind of liturgy does, is that it enables little kids to fully participate. It's something they can learn and master because we do it every week. It includes all the people of God.
-Doug Wilson, Q&A Session of the 2003 Conference for Cultural Change