31 And his mother and his brethren came; and standing outside they sent to him and called him.
Because of the way Mark orders events it can sometimes be confusing to see where particular narratives connect up. Scholars call this the “Markan Sandwich” it is where Mark is telling the orderly narrative, then inserts a non-chronological element and then returns to the orderly timeline. He does this with John the Baptist, reaching back to explain the martyrdom then jumping to the present moment in Jesus’ ministry.
For the sake of todays readings we should look to the previous component to explain why Jesus’ family is looking for him and this takes us to verse 21, where Jesus’ relatives hear of his ministry and preaching and basically assume he has lost his mind. It is important to understand that nothing spectacular occurs in Jesus’ life between the finding in the temple in Luke’s early life narrative and Jesus’ ministry beginning. From the age of 12 to 30 Jesus has been nothing but the obedient son of Mary and Joseph the Carpenter.
It’s not like they had Rabbi vocation courses that Jesus scored 10/10 in, he really was nothing but the obedient son to them until his ministry, working with his father as all sons did, so all of what Jesus has been doing in the past 3 chapters is a massive shock. Mary and Joseph had some knowledge but if he was “normal” for 18 years they would still be in a state of shock that things suddenly change.
So Mary, Jesus’ mother and his “brethren” are standing outside looking for him, this would be outside of the Synagogue he is preaching in. The term in Greek is adelphos although the masculine noun is used, it is being used in a general gender neutral sense, as “sisters” are mentioned a few verses later. Jews commonly called their relatives brethren and after the new covenant this general term becomes evne more broad, encompassing all the members of the Church. On top of that considering the authoritative nature of their approach and their chaperoning of Jesus’ mother we can confidently assume they are male relatives older than Jesus, especially because of the interaction in verse 21.
They are most likely blood relatives of Mary but could not be her children, the names of the male relatives are not mentioned here but elsewhere they are, James, Joseph, Judas and Simon and they are clearly established as sons of a different woman also named Mary.
32 And a crowd was sitting about him; and they said to him, “Your mother and your brethren are outside, asking for you.”
The crowds that are listening to Jesus’ preaching, sitting around him notice the commotion outside of the Synagogue involving his mother and fellow Nazarenes. They tell him that they are looking for him. It is important to remember that the crowds following Jesus around at this time fill and surround the buildings he enters, you might think that his family are for some reason locked out of a sparse room but that is not the case despite the artwork that typically depicts this scene, we know from elsewhere how massive these crowds are. He could not physically see them, nor they him.
33 And he replied, “Who are my mother and my brethren?”
Jesus is not denying knowledge of his family, pretending or otherwise. He has people hanging on every word from his mouth as he preaches the Kingdom of God, the New and Eternal Covenant family about to be brought into the world. He uses this as a teaching opportunity for how these disciples of his should act in the future, they must understand just how deep the New Covenant goes, as we mentioned earlier, Peter will use the term Adelphos to refer to the members of the Church, the new family, deeper than the natural families we are accustomed to.
34 And looking around on those who sat about him, he said, “Here are my mother and my brethren!
Jesus looks around the crowds in order to springboard off the commotion to give one of the deepest lessons about the New Covenant. He tells them that they are his family now. Mother and brethren are mentioned but there is a component of the family missing; the Father. This is because in the New Covenant God the Father is our Father. All fatherhood stems from him and in him.
35 Whoever does the will of God is my brother, and sister, and mother.”
Verse 35 brings us the qualifier for what makes those around Jesus his brother and sister and mother. “Whoever does the will of God.” Just like Luke 11:27-28, where a woman calls out ‘ “Blessed is the womb that bare thee, and the breasts which thou didst suck. But he said, ‘Blessed rather are those who hear the word of God and keep it!’” we see the higher highlight of Mary’s role. It isn’t that she is “just” the biological mother of Jesus that makes her his mother it is that she completely and absolutely submitted to the will of God when she gave her fiat. Be it done unto me, according to your word. No one can ever say they kept closer to this rule than Mary herself which is what makes her the perfect type of Christian to imitate.