Once I learned about the book of Acts, if there was any central " governing body " and that is a big if, it was located in Antioch Syria, not Jerusalem. The majority of Christians were ran out of Jerusalem after the feast of Pentecost by the Romans and Jewish authorities. The majority of first century Christians then moved to Antioch.
Paul travelled back to Jerusalem to correct incorrect doctrine, not join a club.
There is literally no words to describe how stupid the WTS is on this subject.