Being a Christian means that you have been called by the grace of God to enter into a new life and family. Because true conversion also includes a new nature that is given by the act of regeneration it enables this new life and introduction to a new family. This life and family is well characterized by this portion of Scripture from the book of Acts:
Acts 2:44-46 (KJV)
And all that believed were together, and had all things common; And sold their possessions and goods, and parted them to all men, as every man had need. And they, continuing daily with one accord in the temple, and breaking bread from house to house, did eat their meat with gladness and singleness of heart,
It is clear that the early believers because of their conversion and wonderful sense of connection in Christ entertained a dynamic bond to each other and entered into a kind of voluntary socialism. It could also be understood as a compassionate care for one another that led to cheerful and even dramatic personal sacrifice.
I think that it is kind of behavior that Christ addressed in John 13:
John 13:35 (KJV)
By this shall all men know that ye are my disciples, if ye have love one to another.
True Christianity forms itself together in a wonderful and pleasantly puzzling subculture that argues greatly for the reality of this faith. It is not a constrained thing but the natural expression of a true faith.
