Mark 3:20-35 is one of Mark’s typical sandwiches, in which a story starts, gets interrupted by a second story which relates to it in some way, and then finally comes to its conclusion. Here, we are told that, having heard about Jesus’ behavior, some of “His own people” come to seize him, saying, “He is out of his mind” (3:20-21). Then we have the second story, Jesus’ confrontation with the scribes from Jerusalem who claim that he casts out demons by the ruler of the demons (3:22-30). Finally, we return to the first story, when Jesus’ brothers and mother come and send for Jesus and when Jesus identifies those who are doing God’s will by sitting around him as his brother and sister and mother (3:31-35).
That structure is obvious even in an English translation. But a look at the Greek reveals an interesting play on words. At the beginning, when Jesus’ “own people” say that he is “out of his mind” (3:21), the word used literally (or, rather, etymologically) means “standing outside.” (Perhaps that’s roughly equivalent to our English expression “beside himself.”) But at the end of the story, Jesus’ “own people” turn out to be his brothers and mother, who come and, “standing outside,” call him (3:31; cf. 3:32, which stresses again that they are “outside”).
So Jesus’ “own people” think Jesus is the one “standing outside” (in the sense of “crazy”). But Jesus’ family members turn out to be the ones literally “standing outside,” while Jesus identifies those who are sitting inside as his true family, those who, in obedience to God’s will, are “sitting around him” (3:32, 34). To be his true family — his true mother and brothers — his natural mother and brothers must come inside instead of calling him out.
Jesus does indeed belong with his family. But at this point, in spite of their natural relationship with Jesus, Mary and his brothers are not that family. They are seeking to take him away from the ones who sit around him in obedience to God, away from the ones he identifies as his mother and brothers and sisters, in order to take him into their protective custody, as if Jesus would be safe with them instead of they themselves being safe with him. And therefore, though they did later trust in Jesus, they are acting at this moment in unbelief. For Mary to become Jesus’ “mother and brother and sister” now, she must join those who are with Jesus; she must come inside. Otherwise, she will be left outside his family.
Furthermore, in a sandwich story, the middle story also relates to the story that frames it. And so here it is not just the frame story that involves standing (and sitting). In 3:24-25, Jesus says that a divided kingdom or a divided household cannot “stand.” And in 3:26, he speaks of “the satan” as “standing up” against himself.
The reference to the divided household that doesn’t “stand” might resonate with the frame story: Jesus’ natural household won’t stand if his mother and brothers are divided against Jesus. While Mary and Jesus’ brothers are not saying, with the scribes from Jerusalem, that Jesus is in league with the ruler of the demons, they are still opposed to him, still acting in unbelief, and therefore still in danger. Their natural family relationship to Jesus will not keep them safe. Mary is not saved through giving birth to Jesus, and she is not blessed apart from her faith. If Mary and Jesus’ brothers continue to “stand outside” instead of “sitting around him,” then their household won’t stay standing.
The repetition of the word “stand,” and especially of words having to do with “standing outside,” sets up this question: Who is really “standing outside”? If Jesus’ family thinks Jesus is “standing outside” in the sense of being insane, then their household won’t “stand.” And if you think Jesus is “standing outside” in that sense, then you end up “standing outside” yourself, here literally but, as Jesus’ words make clear, also in a deeper sense.
The family is sitting inside, sitting around Jesus and with Jesus. While not everyone has to be crowded into the room where Jesus is sitting, everyone must be with him and not against him. That’s God’s will. Only Jesus’ family is safe, only the mother and brothers and sisters who stick with him. You’d have to be insane to be “standing outside.”