But, Monica, Paul himself in chapter 1 of Galatians says that, after his encounter with the risen Christ, he did not go up to Jerusalem where the "apostles before me" were, but returned to Damascus from Arabia. Then after 3 years he did visit Cephas in Jerusalem, All of which indicates a church functioning around apostles right after the resurrection. Acts is a family history--all the good stuff, none of the bad. But Galatians is Paul himself.