DANGEROUS AND UNCLEAR:

For just as the body is one and has many members, and all the members of the body, though many, are one body, so it is with Christ. For in one Spirit we were all baptized into one body—Jews or Greeks, slaves or free—and all were made to drink of one Spirit.

MUCH BETTER:

For just as the body is one and has many members, and all the members of the body, though many, are one body, so it is with the church. For in one Spirit we were all converted by the Gospel and regenerated in our hearts into one body—Jews or Greeks, slaves or free—and all were made to drink of one Spirit.