The piece in this week’s passage about the millstone and chopping off of hands is often snipped out of its context and used as a general response to sin. It becomes a kind of purity talking point that says if you sin or allow others to sin then you should be punished. However, I think this week’s Gospel text really wants to be read together with last week’s so let’s just remind ourselves of the situation here.
Jesus and his disciples are travelling, avoiding the big crowds, just his dedicated people. When they arrive at their destination, Jesus asks what they were arguing about on the way. No one wants to say because they know he’s not going to be happy, so Jesus calls the twelve and brings a child into the middle of the group. Then he delivers a lecture on welcoming children.
That was last week.
This week continues on immediately with John attempting to deflect the lecture with this complaint about a stranger driving out demons in Jesus name, but Jesus brushes that aside to continue talking about welcoming and not harming kids.
So I’m thinking the incident on the road may have been quite a bit more serious and targeted than a group of dudes squabbling amongst themselves about who was the greatest.
Let’s do some wild speculation. How did Jesus know about the argument on the road? Divine omniscience, maybe, or perhaps he overheard. Here’s another possibility: Maybe Jesus knew, because he got the story from a crying child. Maybe the child is not just an illustration, but was there on the road with them. Maybe this wasn’t so much an argument among the twelve about who was the greatest as it was a targetted exercise in putting this kid in her place. Perhaps the stumbling in verse 42 wasn’t metaphorical but was the product of actual pushing and shoving.
In last week’s passage, Jesus phrased the imperative to welcome children in positive terms. To welcome children is to welcome him. This week, we see that he is really very angry. If you prevent the children from being welcomed, you should walk into the sea with a millstone. If your hand causes you to harm them you should cut it off.
Given last week’s piece on the first and the last, I don’t think it’s unreasonable to expand this past literal children. All of those who are vulnerable or powerless are to be welcomed and protected. Extreme measures are warranted to avoid harm or inhospitality to anyone, but this isn’t a generic warning to avoid sin. The disciples aren’t recieving this lecture because they lead a child to sin, but because they failed to welcome her and placed themselves above her.

“If anyone causes one of these little ones—those who believe in me—to stumble, it would be better for them if a large millstone were hung around their neck and they were thrown into the sea.
Mark 9:42 Full Text Mark 9:38-50


