Some chinuch advice is comfortable to talk about. This isn’t one of them — but Rabbi Lawrence Kelemen teaches it anyway, because avoiding an uncomfortable topic doesn’t make the risk it addresses go away.
Rav Wolbe sets a clear marker: by approximately age nine, at the very latest, there needs to be real separation between siblings — around privacy, around physical boundaries, around the kind of casual closeness that was fine for toddlers but isn’t appropriate once children are older. Kelemen underscores how seriously Rav Wolbe treats this by sharing a sobering data point from his own students: when he asked a room full of them how many had a close relative where something inappropriate had happened between siblings, more than half the hands in the room went up.
The point Kelemen wants every parent to absorb is this: this isn’t a “bad home” problem. It happens, he says, “in the very best homes, where there’s the very best chinuch.” Good values, warm relationships, and strong religious commitment in a household do not automatically prevent this — because the drive involved is, in his words, one of the strongest in a human being, and it doesn’t check a family’s credentials before it becomes a problem. Structure has to do the work that good intentions alone can’t.
This can feel like an alarming thing to plan around, especially in a warm, close family where siblings genuinely love spending time together. But Kelemen’s point is precisely that closeness and good chinuch are not a substitute for gedarim — practical boundaries set up in advance, before they’re needed, not improvised after a problem has already occurred.
What does building these gedarim actually look like, practically, without turning your home into something cold or suspicious?
Set a clear age marker for separate sleeping arrangements, separate bathing routines, and separate dressing spaces, and build toward it well before it becomes urgent — not exactly at age nine in a panic, but as a normal, unremarkable transition your children grow into.
Normalize privacy generally, for everyone in the house, adults included. Knocking before entering a room, closed doors being respected, nobody walking in on anyone changing — when this is just how the house works for every member of the family, the specific sibling boundary doesn’t feel like an accusation. It feels like the house’s ordinary culture.
Talk to children directly, at an age-appropriate level, about body boundaries and what’s appropriate — not as a one-time uncomfortable lecture, but as an ongoing, low-key part of how you talk about safety in general.
Don’t assume your home is exempt because your kids are close, well-behaved, or raised with strong values. Kelemen’s data point exists precisely to puncture that assumption. The families in his story weren’t negligent — they simply hadn’t set up structural boundaries early enough.
This is not a pleasant topic, and Kelemen doesn’t pretend otherwise. But his point is unmistakably practical: unlike so much of chinuch, which is about long-term patience and gradual formation, this is one area where clear, structural boundaries set early are simply non-negotiable — not because you distrust your children, but because you love them enough to protect them from a risk that has nothing to do with how well you’ve raised them.
For more direct, practical chinuch guidance like this, join the inner circle at lawrencekelemen.com.
This blog was co-written with Artificial Intelligence.