How are we to act in church? Like Peter tells us right here and Paul tells us in Ephesians 4:32,
Be unified
Love one another
Be compassionate and sympathetic
Be tender hearted and forgiving
Be humble
These are our mandate. This is what people who walk through your doors should witness. Not just the doors to your church either - your home and your office, your car and relationships are all a witness to the world of what Jesus has done, is doing and can do. What do people witness from your examples?