The Only Side That Can Be Sealed

The Hook

There is a corpse in the house and you have until the burial to save what you can. You take a large earthenware jug, turn it mouth down over a pile of good wool, and pack clay around the entire rim until nothing could pass under it if it tried for a year. Your neighbor watches you work, then carries in a stone bowl, sets it upside down over his own pile, seals nothing at all, and goes home.

His wool is pure. Yours is impure, all the way down. Not because your clay failed. The clay held perfectly. The Rambam gives the reason as a reading of one preposition. The verse in Numbers says a sealed covering on top of it. It does not say a closed covering on its back.

Earthenware receives impurity through its opening and nowhere else, which is why the Torah could speak of sealing it at all, and that same fact means it has exactly one side that participates in the question. Turn it over and you have not built a shelter.

Tum'at Met 21: The Mouth and the Back

The chapter opens with the derivation rather than the rule, which is the Rambam telling you the rule will not make sense without it. Any open vessel that does not have a sealed covering on top of it is impure; read the negative and you have the positive. The Oral Tradition teaches that the verse speaks only about earthenware, because earthenware contracts impurity only through its opening. From there he reasons outward: if a vessel that can become impure holds impurity off its contents when its mouth is closed, surely the vessels that cannot become impure at all do the same. Vessels of cow dung, stone, packed earth, fish bone, oversized wooden vessels, unfinished metal.

Then the distinction that governs everything after it. A tent requires only a covering. A vessel requires a covering pressed and smeared shut. A tent is a category of space; a seal is a category of closure.

Now the reversal. Every one of those vessels also protects when merely turned upside down and stood on the ground, with no clay at all, provided its inner space is a handbreadth in each direction, because in that position it functions as a tent. Every one, except earthenware. Smear all the clay you like around an inverted jug and everything beneath it is impure, because a tent made of earthenware is not a tent. Stand that same jug on its side, press its mouth flat against the wall and seal the join, and it protects everything inside it and everything on the wall opposite its mouth. Same jug, same clay, same house. The only variable is which surface you asked to do the work.

A large samovar is laid on its side outside a tent, its mouth flush against the tent wall. Impurity underneath, and the vessels inside are pure, because a tent counts as a covering in every direction. Move it to the wall of a courtyard, an identical position against an identical stone surface, and everything inside is impure. Those are not the walls of a tent. What saved the vessels was never the samovar; it was what the samovar had attached itself to. The Baal Shem Tov taught that a person is located wherever his will is located and not wherever his body happens to be standing, and the samovar is the halachic form of that sentence.

The finest thing in the chapter is the test in the cistern. A cistern inside a house, a lamp standing in it with its flower rising over the opening, and a protecting vessel laid across that opening so that it rests on the flower. The Rambam measures nothing. He asks about a situation that is not happening. Remove the lamp in your mind. Would the covering stay where it is? If it would, everything below is pure to the depths, and even the lamp is pure. If it would fall, everything is impure. The lamp is holding it up right now either way. The law wants to know whether the lamp is the reason it is up.

Tum'at Met 22: Where a Seal Fails

If the previous chapter asks what may be sealed, this one asks what a seal actually is, and the answer arrives as an inventory of failure. The handles of a large jar do not protect, nor the bulges at its base, nor the outer face of its walls. Cut those handles off and shape them into small containers, and they protect at once. Sealing applies only to containers.

Then the measures, all of them measures of the smallest breach that matters. A large earthenware vessel stops being a vessel when it is holed enough for a pomegranate to fall through, but a vessel already sealed shut is disqualified by far less: a hole an olive can pass if it held food, a hole liquid could seep through if it held liquid, the stricter of the two if it served both. The clay seal of a wine jug fails at the second joint of a stalk of rye.

And then the sentence that quietly outranks all of them. All of that applies to vessels made for wine. If the vessel was made for other liquids, the slightest hole ruins it. And even for wine, all of it applies only when the vessel was not pierced by human hands. If a person made the hole, a hole of any size at all destroys the seal, and nothing is protected until it is closed. You may have a jug whose breach is a tenth of what the measure permits, and it fails, because a hand made it. The measures were never about how much impurity can physically enter. They were about whether this is still a closed vessel or a vessel with an opening in it, and a hole somebody made on purpose is an opening even when it is smaller than an opening needs to be.

The tube teaches it from the other side. A sealed jug of pure liquid with an earthenware tube running into it: the jug is pure, the liquid is pure, and the tube is impure, because one end is inside the sealed jug and the other stands open in the room where the corpse lies. Bend the tube into a curve and nothing changes. It is not closed; it is only inconvenient.

Then what may be smeared to make a seal. Lime, clay, gypsum, pitch, wax, mud, filth, mortar, anything that spreads. Not tin, not lead, because those will not spread and will not close. A twig pushed into a hole will not do it unless clay is smeared around it, and two slivers need clay between them as well as around them, unless they were pegged into one piece first, at which point the middle join disappears. A plump fig may serve if it was never made susceptible to impurity, and the principle underneath all of it is one clause: an impure object cannot intervene in the face of impurity. It is not enough for your barrier to be strong. It has to be clean. And a covering that has come loose no longer protects, though it has not slipped, though it sits exactly where it was. Nothing has moved. It has merely stopped gripping.

Tum'at Met 23: The Decree That Gives Something Up

By Scriptural law a sealed vessel protects everything inside it: food, drink, clothing, metal implements that can be purified in a mikveh. Then the Sages took that back for earthenware, and the Rambam spends the longest passage in these chapters explaining why, and the explanation is not about physics at all.

The other protecting vessels cannot become impure, so their seals are unassailable. Earthenware can, and an impure vessel cannot intervene, and the vessels of people who are not careful about purity must be presumed impure. One might expect a decree that distinguishes them: an earthenware vessel belonging to a chaver protects everything because it is known to be pure, one belonging to an ordinary person protects nothing. The Sages did not make that decree, and the Rambam gives the reason: because the ordinary person does not regard himself as impure. He will say, a sealed earthenware vessel protects its contents, and there is no difference between me and him. So the decree was written to apply to everyone, and the protection was narrowed for the careful man too. He gave up something real so that his neighbor would not be told, in the form of a law, that he is a separate category of person.

They kept the protection where a mistake could do no lasting damage. Food, liquids and earthenware can never be purified once impure, and a chaver would never borrow any of them except on the assumption that they already are. But a metal implement can be immersed. A chaver would borrow one, immerse it, wait for nightfall and use it for consecrated food, and had he been told a sealed earthenware vessel protected it, he would be eating in impurity and never know. The decree closes that gap, and it costs everybody something. The Lubavitcher Rebbe returned again and again to the principle that a standard which writes another Jew out of the account has already failed on its own terms. Here that is not a homily. It is the operative reason for a decree in the Mishneh Torah, set down as calmly as the measure of a rye stalk.

One exception concerns frequency. A person sealed inside a cask is pure, even a cask made the covering of a grave, and the Rambam says openly that this is his own reasoning: the Sages did not decree on an infrequent case.

Then the last law, a whole world in miniature. An aperture between a house and a loft with an earthenware dish laid over it. If the dish is sound, everything in the loft that is food, liquid or earthenware is pure, and every person up there and every implement that could be immersed is impure, because that is exactly how far the decree reaches. A woman kneading dough in a wooden trough becomes impure, and the trough becomes impure, and the dough she is working with her own hands stays pure the entire time she is kneading it. If she stops, and then touches it again, she makes it impure.

The Unifying Principle

What runs through all three chapters is that protection is never a property of a thing. It is a property of a relationship, and the relationship has to be complete and continuous.

The inverted jug fails because its back was never in the conversation. The samovar succeeds or fails on what its lip is touching. The covering over the cistern is judged by a question about the lamp holding it. The jug pierced by a hand fails at a size that would otherwise have been harmless, because an opening is defined by intention and not by volume. The loose lid fails while sitting perfectly still. And the woman is protecting that dough in real time, with her hands, and the protection ends the instant she lets go and comes back.

The Alter Rebbe describes the beinoni in the twelfth chapter of Tanya as a man in whom the animal soul has not been weakened at all. Nothing in him has been purified. He has taken permanent hold of the three garments, thought and speech and action, so that whatever churns inside never gets out through an opening. He is a sealed vessel in the precise sense of these chapters. The interior is not the question; the mouth is. And the grip is continuous, and can be released in a moment, which is the loose lid that has not slipped.

Modern Application

Most of what we call a boundary is an inverted jug. We put the impressive thing on the outside, the correct policy, the stated value, the well constructed explanation, and pack clay around all of it, and the whole arrangement is facing the wrong way. Working harder on the back of the vessel does not help. Only the opening was ever load bearing, and you know where your opening is.

The hole made by a human hand is the ruling that follows people around. Jugs crack, seals age, and the law is patient with all of it. What the law is not patient with is the small deliberate hole. The exception you carved for yourself and mortared halfway shut. The standard that holds everywhere except in the one place you decided it did not have to. It is smaller than the permitted measure. It disqualifies the vessel anyway, precisely because you meant it.

And the third chapter asks the hardest thing. You are permitted a stricter, better protected life, and you are asked to accept a weaker one, so that a Jew who is not where you are cannot read a law and conclude that he is a separate species. They lowered it for everybody, including for the careful man in his own house with nobody watching. The Sfat Emet reads Elul as the month for repairing vessels rather than for producing results, and these chapters are an unusually literal version of that.

The Closing

These chapters fall on Shabbat, the ninth of Elul, in the weeks the Alter Rebbe pictured as the King's walk in the field, when He is accessible to anyone standing there and not only to those who arranged an audience. The Rambam ends this run of laws with a decree whose whole purpose is to keep two Jews inside the same sentence, and he preserves the reasoning and not only the ruling, so that we would know it was chosen.

A seal is not made of clay and it is not made of effort. It is a continuous grip on one opening, it fails the moment it becomes decorative, and it fails at any size at all where you made the hole yourself. Go and find the side of yourself you have been sealing because it is the easy side to seal. Then find the small hole you put there on purpose, and notice that the law does not ask how small it is. It only asks whether a hand made it.