I read it on traditional Catholic website. The Paul and the Gospel writers were Jews, not Catholics. The Twelve continued worship at the Temple. They were a Jewish Sect that followed Jesus' teaching. The churches that Paul started were house churches where the husband and wife would lead the community in a shared meal. In some cases the leader was a women as Paul states. The followers were called disciples. The word apostle came later. 
Do you see that this historical version is different from Church Teaching? Church Teaching gives us a "faith" version.