Nobody Would Ever Know

There is a particular kind of promise that has no enforcement behind it at all.

We told someone we would do a thing. They have since forgotten. Nobody else heard. There is no record, no consequence, no chance of discovery, and doing it will cost us an afternoon we do not have. If we quietly didn't, the universe would register nothing.

Most of us do it anyway. And if we don't, we feel something, which is the strange part — a small private accusation from a source we would struggle to name.

I have never been able to explain to myself what exactly was created when I said the words.

## Nothing happened, and yet something binds

Think about how odd promising is as a mechanism.

Nothing moves. No money changes hands, no object is transferred, no law is invoked. Air is pushed past a tongue in a particular pattern, and afterwards an obligation exists that did not exist ninety seconds earlier. We do this several times a day and never find it remarkable.

The law, which we might expect to be confident here, is markedly less confident than we are. Under common law a bare promise — a promise with nothing given in exchange — is generally not enforceable at all. There must be *consideration*, a bargain, something moving the other way, before a court will treat our words as binding.¹ Which is a quiet admission: the legal system does not believe words alone can create an obligation. It believes a trade can.

Hold on to that phrase, *bare promise*, because it is not only a legal curiosity. Nothing given, nothing gained, nothing moving the other way — that is the exact shape of the oldest promise in this tradition. A childless man in Genesis is told to bring a heifer, a goat and a ram, cut them in half, and lay the halves in two rows with a path between them. That was how a covenant was ratified: the two parties walked the path between the carcasses, and the walk was itself the sentence — *may I be made like these animals if I fail to keep my word*. Jeremiah still describes the ceremony in those terms centuries later, when he tells the men who walked between the parts of the calf that they will be handed over to become exactly what they walked through.² Then in Genesis the sun goes down, Abram falls into a dead sleep, and a smoking firepot and a blazing torch pass between the pieces. Alone. Only God walks the path. The one party who could not conceivably default takes the curse for both of them, and the man the promise was made to is unconscious on the ground while it happens.³ There was no one greater to swear by, so, as Hebrews has it, he swore by himself. We will have to come back to that. A promise with a trade behind it is a transaction, and a court can price it. A promise with nothing behind it but the one who said it is a different species of thing, and it is the species we actually live on.

And yet in ordinary life we behave as though words alone do exactly that. The promises we feel most bound by are almost never the ones with consideration behind them.

## The strongest explanation, and where it stops

The best account I know is the strategic one, and it deserves to be stated at full strength rather than waved at.

Thomas Schelling's insight, which reshaped how economists think about bargaining, is that the ability to bind our own hands is a form of power.⁴ A driver who visibly rips out his own steering wheel wins the game of chicken. A negotiator who has publicly committed to a number has, by giving up his freedom to move, gained leverage. On this reading a promise is a commitment device: it is valuable *because* breaking it is expensive. Reputation is the enforcement mechanism, and the cost is what makes the signal worth anything.

This explains an enormous amount. It explains why we want promises made in front of witnesses. It explains our particular fury at the person who breaks small promises casually — he is showing us the cost is low for him, which is exactly the information we needed. It explains why a promise from a stranger passing through town is worth less than the same words from a neighbor.

What it does not explain is the promise in the first paragraph.

There the whole apparatus is missing. No witnesses, no reputation at stake, no repeated game, no future encounter in which today's behavior could be priced. And it is not a marginal case. People keep promises made to the dying. People keep promises to parents who have been gone for decades and could not be disappointed if they tried. A man will drive four hours to put flowers somewhere because of something he said to someone who is no longer there to know whether he did it.

The longest version of that drive I know of ends at a grave. God made promises to people who then died without seeing them kept, and kept them anyway, centuries late, to men in no position to hold him to anything. And the price of that had already been named, out loud, between two rows of carcasses in the dark. Christ is what it looks like when the bill comes: the one who walked the path alone is himself broken, publicly, on a hill, under the curse he had called down on himself rather than on the sleeping man — faithfulness carried all the way into the one place where there is no counterparty left to enforce a thing.

And Abram asleep on the ground is not the only one of us in that story. Jeremiah's men walked the path on their own feet and then broke what they had walked into, and the sentence was that they would be handed over to become the thing they had walked through. That is our half of the ceremony, and it is the half with a bill attached. So the torch that went between the pieces alone was taking on the handing-over — ours, not his. What happened on the hill was the covenant-breakers' own sentence, carried out on the only party who had never walked away from anything.

On the strategic account, keeping that promise is simply an error. The habit was built for live bargaining, where there is someone across the table who can hold us to our word, and here it goes on running long after the other party is gone. Maybe that is all it is. But it is a remarkably consistent error, and from the inside it does not feel like one. It feels like the thing is still owed.

Lewis B. Smedes, who spent a good part of his life thinking about this, put the matter the other way round. A promise, he argued, is how a creature who cannot control the future reaches into it anyway and makes one small patch of it dependable — and in doing so becomes someone with a shape that outlasts his moods.⁵ On that reading the promise to the dead is not a leftover habit running on. It is a person being the same person.

A small 1994 film catches a faint echo of that, *It Could Happen to You*.⁶ A New York cop tells a waitress he will split his lottery ticket with her; the ticket wins four million dollars; his wife explains that the promise cannot possibly count, since nothing was ever written down — which is very nearly the common-law position, and is still obviously the wrong answer. He hands over two million. It is a slight picture and the money is the least interesting thing in it. What stays is that the man who has just paid an absurd price for one sentence nobody could have held him to is the only person in the story who still knows who he is.

Say that plainly, though, and it cuts both ways. A promise we will not break can end up as the last load-bearing wall of a self we are constructing — the one beam still upright in a house held up entirely by our own performance, and therefore the one we cannot afford to let go of. That is an enormous weight to hang on a sentence said to a waitress.

There is a way this goes wrong, though, and it is worth naming before we go on. Keeping our word is exactly the kind of thing that turns into a righteousness project. The promise stops being about the person we made it to and starts being about the record we are assembling — evidence that we are the sort of person who follows through, filed against an accusation nobody has actually brought. That may be part of why the small private accusation is so hard to place. Some of it is conscience. Some of it is the ledger. And a promise kept to keep the ledger clean is not much of a gift to anyone; it is a payment, and the person we made it to is incidental to it.

There is a second place the strategic account runs thin, and it is closer to home. We make promises to ourselves. Not resolutions, which are forecasts and behave like forecasts — actual promises, of the kind a person will honor at real cost years later because they said so once. There is no counterparty at all there. No one to lose face with, no one to defect against. Whatever is doing the binding is not doing it between two people.

Unless it never was between two people in the first place. A promise made alone in a room is still made in someone's hearing. There is a third party to every promise we have ever made, including the ones with only one of us in them: the God who promises, who does not leave the room when the other party dies or forgets or was never there to begin with, and who hears our word whether or not we thought to call on him. That is not a pious ornament bolted onto the account. It is the only way the arithmetic comes out. The obligation persists because the one in whose presence it was spoken persists — and he is not neutral about it, being himself the sort of person who walks between the pieces alone.

## A prediction, or a bond

I think the confusion underneath all of this is that we have started hearing vows as forecasts.

Say the words *I will love you for the rest of my life* in the modern ear and they scan as a prediction — a sincere estimate about future feeling. Which means that when the feeling changes, nothing has been broken. We were simply wrong about the weather. People end things now with real bewilderment at being blamed: *I meant it when I said it.* And they did.

This is not an argument that people should stay in ruinous marriages, and it would be dishonest to let the logic slide there unremarked; a vow can be broken by the other party long before anyone files anything, and Scripture itself knows about covenants already destroyed from the inside. The narrower point is about what was being said in the first place.

So the question underneath *why does a promise bind* turns out to be a question about what kind of thing a person is. If we are essentially a sequence of states, then a promise is one state trying to tyrannize the ones that follow, and it should lose. If we are something that persists — something that can be the *same* across time in a way that makes the person who spoke and the person who must now pay genuinely one person — then a promise binds, and the binding is not tyranny. It is just identity, holding.

And then the question turns once more, because our own persistence is not the bottom of it. We did not invent promising, and we are not self-originating creatures who happen to endure. We are made in the image of a God who does not default — who binds himself when nothing obliges him to, and pays when the other party is asleep, or forgetful, or already in breach. Whatever holds in us holds after him.

Which finally locates the small accusation in the first paragraph, the one we could not trace. It is hard to place because we go looking for it among the interested parties, and in that kind of promise there are none: the person we told has forgotten, nobody heard, nothing whatever is at stake. But it was never coming from a party. It was coming from a likeness. A word given is the place where the likeness shows most, which is why breaking it registers somewhere well below the level we can argue with.

So — back to the afternoon we do not have. We could skip out. Nobody would ever know. That was true when we started and it is still true. It is only that *nobody* was never quite the right word for it.