The word "we" refers to Paul and all the believers. (See: [[rc://en/ta/man/translate/figs-inclusive]])
## we are members of his body ##
Possible meanings are 1) "we are members of his body of believers" (non-metaphorical sense) or 2) Believers fit together to form the body of Christ just as the parts of the human body fit together to form a person. (See: [[rc://en/ta/man/translate/figs-metaphor]])