This is the center of a article by Chris Freet at The Amplified Life blog.
When it comes to the Scriptures and the church, one of the metaphors used in reference of the church is “family.” Through Christ, we are all brothers and sisters. No are no distinctions of race, class, sex, etc. When the church realizes this it is a beautiful and very powerful thing. The outside world is constantly watching the church and what are they seeing? When the church acts and lives as the family of God that is quite possibly one of the greatest apologetics we have at our disposal.
According to Dr. H. Douglas Buckwalter, NT and Greek professor at Evangelical Theological Seminary, the literary center of Matthew’s gospel is 12:46-50. Here’s what we find in these verses:
While Jesus was still talking to the crowd, his mother and brothers stood outside, wanting to speak to him. Someone told him, “Your mother and brothers are standing outside, wanting to speak to you.” He replied, “Who is my mother, and who are my brothers?” Pointing to his disciples, he said, “Here are my mother and my brothers. For whoever does the will of my Father in heaven is my brother and sister and mother.” (NIV)
Notice that Jesus equates action (“doing the will of the Father”) with his true family members. Those who are of the family of God through Christ live it out.