Quaker worship services are called "meetings for worship". They start with everybody sitting quietly. This is because they are trying to listen to God. Sometimes, a Quaker will feel that God wants him or her to say something. When this happens, the person stands up and tells everyone. Then they all sit quietly again. At some meetings, a many people will speak. At other meetings, nobody speaks. Quakers feel that a meeting for worship helps them to understand what God wants. Usually, worship lasts about an hour.