In a Muslim society, it can be said that the religious institution is the most important in a Muslim life because it is impossible to separate a Muslim from his/her religious path. Because Islam does not have priests or monks, the mosque becomes a pivotal aspect of Islam. The structure of a mosque is different from the structure of buildings in other religions in that it is not a residence of one particular group. It has social functions in a Muslim community, different only in forms and contents. As a community center, the mosque has had unique aspects and functions since the time of Prophet Mohammad. Its functions include religious, educational, socio-economic, and political. An Imam is elected to lead in religious ceremonies.