A church bell in the Christian tradition is a bell which is rung in a church for a variety of church purposes, and can be heard outside the building. Traditionally they were used to call worshippers to the church for a communal service, and to announce times of daily prayer, called the canonical hours. They are also rung on special occasions such as a wedding, or a funeral service. In some religious traditions they are used within the liturgy of the church service to signify to people that a particular part of the service has been reached. The ringing of church bells, in the Christian tradition, was also believed to drive out demons.