Jewish tradition grapples with this very question when dealing with the concept of an ir hanidachat (עִיר הַנִּדַּחַת), a "condemned city," a city so steeped in idolatry that it must be utterly destroyed.

But what does "utterly destroyed" really mean? That's where the Sifrei Devarim, a legal midrash on the Book of Deuteronomy, steps in to provide some truly fascinating, and at times unsettling, details.

Imagine this: a city so lost to false gods that it's deemed a cancer on the land. The Torah commands us to eradicate it, to burn it completely. But even in destruction, there are rules, boundaries. The Sifrei Devarim asks: what about the city's layout? What about the things within the city?

The text specifies "into the midst of its square." So, what happens if the city doesn't have a square? Well, according to the Sifrei, you build one! You create a central space specifically for this act of destruction. And if the square is outside the city limits? You bring it inside. This detail emphasizes the importance of containing the destruction, of ensuring that the cleansing fire reaches every corner of the condemned place.

But here’s where it gets even more interesting. What about the city's possessions? The verse says, "and you shall burn with fire the city and all of its spoil." Does that mean everything goes up in flames? Not quite. The Sifrei Devarim clarifies: "and not the spoil of Heaven." Even in this act of absolute destruction, there's a distinction. Anything dedicated to God, anything holy, is exempt. This principle leads to a very specific set of instructions: Consecrated objects are to be redeemed, essentially bought back from destruction. Terumot (תְּרוּמֹת), the portions of crops set aside for the priests, are left to spoil. And ma'aser sheni (מַעֲשֵׂר שֵׁנִי), the second tithe that was to be eaten in Jerusalem, and holy writings are to be hidden away. This isn’t just about mindless destruction; it’s about a precise, deliberate process.

The text goes on, "entirely, for the L-rd your G-d." The Sifrei Devarim interprets this as: If you carry out this judgment against a condemned city, God considers it as if you offered a complete burnt offering. It's a sacrifice. A painful, necessary sacrifice to cleanse the land and reaffirm the covenant.

And finally, the Sifrei connects this concept to the story of Jericho. Remember how Joshua cursed anyone who would rebuild it? “And it shall be a heap forever.” The text points out that we know Jericho is its name, so the curse isn't just about the name. It’s about the very idea of rebuilding that city, or building any other city and calling it "Jericho." It's a permanent reminder, a lesson etched into the landscape.

So, what are we left with? The ir hanidachat is a stark, unsettling concept. It challenges us to confront the reality of absolute corruption and the drastic measures sometimes deemed necessary to eradicate it. But within that destruction, we also find a profound sense of order, of justice, and a unwavering commitment to preserving the sacred, even in the face of utter devastation. It asks us to consider: What are we willing to sacrifice to protect what we hold most dear?