How the Church Grows (Ephesians 4:1-16)

What makes a church grow? Is it up to the pastor or a specific music style or a kind of program? We come this Sunday to a significant transition in Ephesians. From "grace in" to "grace out" or generally, from teaching to application. How does our union with Christ work out into unity with one another? And this Sunday, how does our union with Christ grow us in maturity together?