At the heart of the reality of worship is the worth of God, and we acknowledge that worth in action: in music, Scripture, confession, participation in the sacraments, the giving of our gifts, prayers, and silence. The ritual, or action, of worship is important because it is the pattern for life.
Corporate worship reflects God's worth in the reality of our calling to be members of the Body of Christ. Because we are all members of the one body, we come together on the Lord's day to worship as one.
“Directory for Worship” Reformed Church in America