The word is used by AV for the annual commemoration of Jesus' resurrection at Acts 12: 4; modern versions prefer ‘Passover’. Easter soon became the chief festival of the early Church, and by the 3rd cent. it was preceded by a night vigil. At dawn those who had been prepared were baptized; all received communion. There was no observance of Good Friday as a separate memorial day until the 4th cent. For some time Easter, as the Christian Passover, was observed on 14 Nisan, the date of the Jewish festival, whether it was a weekday or a Sunday. This continued for some time in Asia Minor, where the group known as Quartodecimans observed Easter when Jews celebrated Passover on 14 Nisan whatever the day of the week; but in Rome and elsewhere the feast was kept on the following Sunday, and this was the date settled by the Council of Nicaea (325 CE).