Worship and Mission

Lately I've been thinking a lot about involving people in the mission of God in the world.  To be brief, we in the church shouldn't extol people to do good deeds because its the Chrisitan thing to do, or to make themselves feel good.  Rather, they should do good deeds to be apart of what God is doing in the world.  To use Calvin's language, we extol them to be "participation in Christ"So, how can we expect people to participate in the mission of God in the world if we don't allow them to participate in the worship of God?