It must be an act of worship. Our service to people. This then is the first part of the three-fold mission of the church. The church has been given birth in order to provide a way whereby God might be worshipped. He must be worshipped.
Worship is for our benefit.
God has need of nothing to be complete. He is wholly complete in Himself. Yet, He longs for our worship because His love for us recognizes that we need to be worshipers in order to be complete. Worship then is for us. All of life then must flow out of our worship.