The apostle Paul calls the church in Corinth a body — and that’s political language: “God has arranged the parts in the body, every one of them, just as he wanted them to be … As it is, there are many parts, but one body” (1 Cor. 12:18-20).
As Dale Martin argues in his book The Corinthian Body, Paul gets his language about the social body, the political body, from other Greco-Roman speeches and letters. He uses a style of writing and speaking called a “concord” — homonoia in Greek. Politicians would give speeches or write letters trying to convince the diverse people of the city to unite in a common project, to share the same goals for society, to share a common politics. In these “concord” addresses, politicians would call the society a body, just like Paul does in his letter to the divided church in Corinth. We are one body, politicians would say, so we need to act accordingly. We are one — united, bound together. Of course, politicians only made these speeches when they needed to: that is, when dissatisfied segments of society wanted to revolt (see Martin, Corinthian Body, 38-47).