Who are my Mother and my Brothers?

In the Gospel of Mark, there is a passage in Chapter 3 were Jesus' Mother and Brothers have come looking for him because they are concerned about him.  Jesus begins to discuss who is true family is, but also issues a few warnings about our perception of his work that he is doing.  Fr. John takes the passage and breaks it down until, ultimately describing the work of the church that is needed today, even if it comes to great risk to our selves.