"There are occasions when non-Jews visit a synagogue. They may be invited to the service by Jewish friends celebrating a Bar-Mitzvah or some other special event in their lives. They may be part of a church group studying Judaism, who wish to experience a synagogue service. Or they may simply be individuals who are curious about Judaism and wish to learn more about it. Whatever the reason for the visit, a non-Jew is always welcome to attend a synagogue service. He may come only to observe the service or to join in the prayers if he so wishes."