It’s worth pondering St. Paul’s materialism :

To say that the Church is the body of Christ is no more of a metaphor than to say that the flesh of the incarnate Jesus or the bread of the Eucharist is the body of Christ. None of them is ‘like’ his His body (Paul never says this): each of them is the body of Christ, in that each is the physical complement and extension of the one and the same Person and Life. They are all expressions of a single Christology.

Robinson, The Body: A Study in Pauline Theology, 51.