1. One way to effectively build community is to do this excercise, and share your life story with the community of believers. It helps me be vulnerable, and bring things to light that I am ashamed of. It helps the community show me that I am a weak human in need of grace also, needing the cross of Christ, and his love to comfort and guide me.
2. Build community by doing what I do by myself, WITH OTHERS. Living life with others.
When I get lunch, do it with someone else. When I read, do it with others. When I pump iron, do it with others. Doing the mundane things of life with fellow believers is doing gospel community.
3. Bring unbelievers and they will see what a community looks like.