You can choose your friends but you can’t choose your family
The brothers of Jesus (James, Joses, Simon and Judas are all named in Matthew 13:55, and no not that Judas), had grown up with the very son of God living under the same roof:
In John’s gospel, all of these events took place before John’s statement that, ‘…not even his brothers believed in him.”
Being physical family with someone doesn't make you automatically believe them or connect with them in a meaningful way. You have to develop that relationship. In today's sermon we'll see that God’s view of family is much broader than the definition of blood lines. It’s by the definition of Jesus’ blood sacrifice. The offer to become a part of God's family is available to everyone but we have to make the decision to trust in Jesus as savior.