Paul and Silas heal a slave girl who is doubly oppressed (Acts 16). Firstly she is a slave and secondly she is possessed by an evil spirit that controls her. When she is healed, her owners are furious because they have lost their source of income. Paul and Silas are beaten and thrown into jail. Their response is to sing hymns and praise God. When given the chance to escape, they do not take it. Their sacrifice and attitude leads to the jailer and his whole household being saved.