Rabbi Shimon ben Yochai tackled a puzzle in the laws of the Passover sacrifice. The Torah states: "In one house shall it be eaten" (Exodus 12:46). Does this mean literally one physical house — the lamb cannot leave the building? Or does it mean something else entirely?
Rabbi Shimon ben Yochai argued that "one house" actually means "one group." His proof comes from another verse in the same chapter: "of the houses where they eat it" (Exodus 12:7), which uses the plural "houses." If the Pesach (Passover) can be eaten in multiple houses, then "in one house" cannot be a literal spatial restriction. It must refer to the unity of the group eating together.
From this reasoning, Rabbi Shimon ben Yochai derived a practical ruling: the Pesach may be eaten in two different physical locations, but it may not be eaten by two separate groups. The key factor is not where you are sitting but who you are eating with. A single designated group can move between rooms, between indoor and outdoor spaces, even between buildings — as long as they remain one cohesive unit sharing the same sacrifice.
This interpretation shifts the emphasis of the commandment from architecture to community. The holiness of the Passover meal does not depend on four walls. It depends on the bonds between the people gathered around the lamb. The "house" that matters is the human one — a group united in purpose, bound together by a shared sacred act. Walls are incidental. Fellowship is essential.