meditatio at the water's edge

I am working on some stuff for this course on discipleship I'm teaching with John West, and I worked up the following diagram for what the church is to be and do in the world. I would like some feedback to refine it. So, let's hear it...

What Is the Church Here For?
Mission: Extending the Kingdom of God (proclamation of the availablility of the kingdom through Jesus, cooperating with God’s work of healing through service to others)
Expression: Embodying the Kingdom Life (worship, demonstration of renewed lives)
Discipleship: Training in the Kingdom Life (apprenticeship, teaching, loving one another)