Church
The church is a collection of individuals, and each individual needs to do his or her part. The first two verses are ones many people memorize to remind them of the importance of surrendering to God and avoiding acting like everyone else. Love for each other is also important for making the church run well.
It is common for people to complain about the church not being what it should be, but the church is people. If the people lived their lives the way this chapter says, the church would be doing what God wants as well. We can complain or we can do what God is telling us to do.