Acts 12:12-14

When he realized what had happened, he went to the house of Mary the mother of John, who was also called Mark, where many [believers] were gathered together and were praying continually [and had been praying all night]. When he knocked at the door of the gateway, a servant-girl named Rhoda came to answer. Recognizing Peter’s voice, in her joy she failed to open the gate, but ran in and announced that Peter was standing in front of the gateway.